A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Accelerated Aging

A set of laboratory conditions designed to produce, in a short time, the results of normal aging. Usual factors included are temperature, light, oxygen, and water.

Acetone

A colorless, volatile, water-soluble, flammable liquid made from either alcohol or by bacterial fermentation of carbohydrates; used in paints and varnishes, as a general solvent, and in chemical manufacturing.

Acute Area

The area of the windshield directly in front of the driver's eyes, beginning just above the steering wheel. It measures approximately 8 1/2 inches high by 11 inches wide. This area is used as the standard for the driver's critical vision area by most auto glass shops and insurance companies in the United States.

Adhesion

The physical joining of two materials, especially of dissimilar substances like glass and metal.

Adhesive

For ARG, a substance used for bonding other substances together - such as a windshield and the pinchweld in the vehicle

Adhesive Chip

A fragment of glass that is fused or adhered tightly to the surface of the glass AG Automotive glass.

Adhesive Failure

Adhesive failure indicated by the material's failing (pulling loose) at the surface of the substrate. Similar to "scotch" tape peeling off a plastic substrate.

Aerodynamics

The branch of physics that deals with the motion of a solid body through air and other gases.

Anneal

The controlled process for making glass stronger and less brittle in which the glass is heated and then cooled.

Annealing

The process of preventing objectionable stresses in sheer, float, or rolled glass during manufacture by controlled cooling. Re-annealing is the process of removing objectionable stresses in glass by re-heating to a suitable temperature followed by controlled cooling.

Antenna

Wire or set of wires capable of transmitting or receiving radio waves. Sometimes bonded to or imbedded in replacement glass parts.

Anti-Lacerative Glass

Glass that has a resilient layer (PVB) added to the inner surface. It prevents passengers from coming into contact with broken glass edges on the inner surface in the event of a collision./FONT>

ARG

Automotive replacement glass.

Auto Glass Repair

The act of repairing a break in a windshield or other laminated auto glass part, rather than replacing it. Auto glass repair is a permanent process that removes the air from the break and fills it with a curable, optically matched resin. Same as windshield repair.

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Backlight

The rear glass window in a vehicle.

Batch Privacy Glass

Ford Glass Division uses a process for producing privacy parts in which the feature is accomplished by adding ingredients to the mixture in the float tank. Before the process, reflective coatings were applied after the glass was produced.

"B" Parts

This reference is used to describe Carlite parts which are sold at a lower discount off truckload which makes their cost higher compared to other parts with similar NAGS list prices. Some distributors may elect to sell these parts to installers at a net price instead of discounting off NAGS.

Bead

A sealant after application in a joint irrespective of the method of application, such as caulking bead, glazing bead, etc. Also a molding or stop used to hold glass or panels in position.

Belt Molding

A rubber molding between the inner and outer panels of a vehicle door through which the door glass is raised and lowered.

Bent Glass

Flat glass that has been shaped while hot into cylindrical or other curved shapes.

Bevel

A deviation from a right angle break on a scored and severed glass edge

Bite

The dimension by which the edge of the glass product is engaged into the glazing channel.

Block

Rectangular, curved sections of neoprene or other approved material used to position the glass in the glazing channel.

BMS

The company computer and software system or Branch Management System.

Bond

The attachment at an interface between substrate and adhesive or sealant.

Book Inventory

The book (or ledger) value of inventory at a current standard cost which is adjusted monthly.

Bow

A deviation of the glass surface from a true plane.

Breakage Account

The account to which the value of ARG parts inventory is charged when they are broken or otherwise damaged beyond repair.

Breather Tube

A device added to an insulating glass unit that allows excess pressure to bleed off to the atomosphere. Required for high (over 4000') altitudes.

Bubble

A round or elongated gaseous inclusion in the glass; may be partially emergent.

Bug

Logo of the manufacturer etched into or painted onto the ARG part.

Bull's Eye

Impact damage to laminated glass that is marked by a clean, separated cone in the outer layer of the glass.

Bullet-Resisting Glass

A multiple lamination of glass with tough clear sheet plastic, usually at least 1 3/16 inches thick overall, which is designed to stop bullets from ordinary firearms other than high-powered rifles.

Butt Glazing

Installing glass products where the vertical glass edges are without structural supporting mullions.

Button (or mirror button)

An attachment on the interior surface of the windshield used to hold the rear view mirror.

Butyl

A sealant type used in some installations. Comes in Tape form and in liquid form in caulking tubes.

Buy Out

The process of buying a part from a competitor to fill a customer's order.

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Carlite

Brand of AG and ARG part produced by Ford Motor Glass Division - CAR.

Cash Discounts

An amount allowed by the manufacturer usually (1-2 percent) which is deducted from an invoice by the customer when the invoice is paid on or before the due date.

Ceramic Paint Band

A band painted around the edge and extending onto the surface of an ARG part which is baked onto the glass. (also known as a "Frit")

Channel

U-shaped metal or plastic sometimes lined with felt or other material (used to reduce wind noise) which provides a track for movable glass parts on vehicles.

Channel Glazing

Installing and sealing glass products into U-shaped glazing channels using removable stops.

Chemical Cure

Curing by chemical reaction. This usually involves the cross-linking of a polymer.

Chemically-Strengthened Glass

Glass which has undergone ion-exchange to produce a comprehensive stress layer.

Chip

Impact damage to laminated glass that does not penetrate the outer lite. Although glass is missing from the impact point, there is no trapped air in the damage.

Clips

Devices used to attach decorative molding to the vehicle body.

Close-Cut Or Partial-Cut Installation

An installation method that leaves most of the existing adhesive bead/bed adhered to the metal frame and adds a small fresh bead of adhesive into which to set the glass. Some vehicle manufacturers do not recommend this procedure.

Coated Glass

Glass with a chemical film applied to one surface. The film can provide such enhanced performance characteristics as privacy, solar or mirror effects.

Coating Void

A small round area in the coating where there is an absence of coating.

Cohesion

The ability of a sealant or adhesive to hold itself together. The internal strength of an adhesive or sealant.

Combination Break

A break in a windshield involving more than two types of breaks.

Contaminant

A substance, liquid or solid, which is present in a break. Contaminants must be removed from a break before a repair can begin.

Corner On/Off

Angle formed by the intersection of two adjacent edges; an excess (corner on) or a lack (corner off) of glass can sometimes occur.

Corrosion

The chemical reaction of air, moisture, or corrosive materials on a surface; also called oxidation. The process of wearing away the surface of a solid.

Cosmetic Blemish

A defect in the appearance of a vehicle. Includes torn upholstery, scratched paint and resin spills.

Cosmetic Surface

A surface that is finished or decorated to improve its appearance. Includes such things as paint, glass and upholstery.

Crack

An extended crack in a windshield from both sides of an impact point. There are several different kinds of cracks: Short crack: A crack on the windshield of 6 inches (15.24 cm) or less. Long crack: A crack on the windshield of more than 6 inches (15.24 cm). Edge crack: Any crack on the windshield that extends to an edge. Floating crack: Any crack on the windshield that does not extend to an edge. Stress crack: Any crack extending from an edge without an impact point.

Crinamex

Brand name for windshields produced by Vitro-CMX.

CSR

Abbreviation for customer service representative. Usually a title for a dispatcher, bookkeeper or receptionist.

Cullet

Broken glass, excess glass from a previous melt, or edges trimmed off when cutting glass to size. Cullet, in some regular proportion, is an essential ingredient in the raw batch charge in glassmaking in that it facilitates melting.

Cure

The hardening of a liquid material or adhesive by means of a chemical reaction.

Curetime

The time necessary for the adhesive or sealant to dry or completely set.

Curtainwall

An exterior building wall which carries no roof or floor loads and consists entirely or principally of metal or a combination of metal, glass and other surfacing materials supported by metal framework. There are two basic types.

Custom

Walls designed specifically for one project and using parts and details specially made for this purpose. Standard Walls made up principally of parts and details standardized by their manufacturer and assembled in accordance with either the architects design or the manufacturer's stock patterns.

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Damage

Same as break and crack.

Dauber

Tool used to apply urethane primer.

Dead Load

Load force due to glass weight.

Delamination

Term used to describe glass separating from the vinyl inner layer in a laminated part.

Deposit (in coating)

Opaque contamination on the surface of the coating.

Desiccant

An extremely porous crystalline substance used to absorb moisture from within the sealed air space of insulating glass unit.

Dig

A short, deep scratch or puncture of the glass surface.

Ding

A term often used by the public to refer to a stone damage to a windshield.

Disbursement Memo

A company document which must be completed and attached to invoices before they are paid which includes instructions for the proper accounting of the payment.

D.O.T Number

Code number issued by the US Department of Transportation, usually located in the logo or bug, which identifies the manufacturer part.

Double Glazed Windows

A common term for insulating glass units, which feature either air or a safe, colorless, odorless gas tightly sealed between two panes of glass. For increased energy efficiency, one or both pens can be treated with a low-E coating.

Double Strength

In float glass, approximately 1/8-inch thick.

Drag co-efficient

The mathematical expression of the retarding force exerted by air upon the body.

Dry Glazing

A method of securing glass in a frame by use of a dry, preformed resilient gasket, without the use of a compound.

Dry Set

A procedure by which a technician sets the glass in the vehicle glass opening before applying any adhesive or primer. The process is used to position with alignment markings or tape.

Drilling

The use of a drill to gain access to a tight break.

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Edge Clearance

Nominal spacing between the edge of the surface of the glass product and the glazing channel base.

Edge Crack

Any crack on the windshield that that extends to an edge. See also: Crack

Edging

Grinding the edge of the flat glass to a desired shape or finish.

Elasticity

A measure of how well a sealant "bounces back" after it has been stretched.

Emissivity

The ability of a material to emit radiant energy. Emittance is the ratio of the total radiant energy emitted by a given surface to that emitted by an ideal black body at the same temperature. To emit is to give out, to discharge in the case of glass, essentially, to reradiate absorbed energy (heat).

Encapsulated Glass

A type of auto glass fabrication. Pre-assembled parts that contain hardware: moldings, fasteners, clips, or gaskets. Glass with a decorative molding around all or part of the perimeter. The encapsulation can also act as a channel guide. The molding (encapsulation) is actually part of the glass and can be removed only by cutting it off the glass.

Encapsulation

Injection molding around the perimeter of an AG part.

Excess Transfer

The process of transferring excess inventory from one location where it is not needed to another where it is more likely to be sold.

Exterior Glazed

Glass set from the exterior of the building.

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Fast Cure Urethane

A faster hardening adhesive. The term "fast" is relative to the surrounding temperature and humidity. Curing time is faster than for normal adhesives.

Fill Rate

The percentage of items shipped compared to the number ordered.

Filler Strips

Strips inserted into a gasket which locks the gasket and glass in place. Also know as locking strips.

Flake Chip

An edge condition where the removal of a shallow amount of glass from the surface face or the edge face results in an area void of glass that is shell-like in appearance. Width is defined as the maximum dimensional extent of glass removed from the face when measured perpendicular to the edge.

Flammable

A volatile liquid or gas which has a flash point of 100 degrees Fahrenheit or 38 degrees Celsius. "Flammable" is synonymous with "inflammable."

Flare

A sharp, thin extension of glass from a cut or broken glass edge where the fracture tends to approach a plane parallel to the surface.

Flat Glass

A general term that embraces float glass and various forms of rolled glass (as contrasted with fiber glass, containers, etc. ).

Flexing

A method of gaining access to a tight break by flexing the glass back and forth, either with a tool or by hand.

Floating Crack

Any crack on the windshield that does not extend to an edge. See also: Crack.

Flowering

A flower petal effect around the outer edge of a repair. This is caused by the laminate detaching from the outer layer of glass.

FMVSS

Federal Motor Vehicle Safety Standards, set by the National Highway Traffic Safety Administration, which detail the safety criteria manufacturers must meet in order to conform to regulations.

F.O.B.

The term used to define the point or location at which the manufacturer considers a product delivered to the customer.

Frit

The painted band around the perimeter of auto glass parts.

Fully Tempered Glass

Glass that has been tempered to a high degree. Specified by ASTM C 1048 (Kind FT) as having a surface compression of not less than 10,000 pounds per square inch (psi) or an edge compression of not less than 9,200 psi. Fully tempered glass, if broken, will disintegrate into many small pieces (dice) which are more or less cubical. Fully tempered glass is four to five times stronger than annealed glass of the same thickness.

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Gasket

Preformed shapes, such as strips, grommets, etc., of rubber or rubber-like composition, used to fill and seal a joint opening either alone or in conjunction with a supplemental application of a sealant.

Glass

An inorganic product of fusion which has cooled to a rigid condition without crystallizing. It is typically hard and brittle and has a conchoidal fracture. It may be colorless or colored, translucent, or opaque by the presence of dissolved, amorphous, or crystalline material.

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Half Moon

Damage to a windshield that has a half-circle separation around the impact point. It is similar to a bull's eye.

Hardware

Parts added or attached to AG part. Also known as "attachments".

Heat-Absorbing Glass

Glass for intercepting appreciable portions of radiant energy, especially solar energy, in specific transmittance values as defined in ASTM C 1036. It is obtainable as float and patterned glass.

Heat-Resisting Glass

Glass able to withstand high thermal shock, generally because of low coefficient of expansion.

Heat-Strengthened Glass

Glass that has been heat-treated to a state less than that of fully tempered glass. Specified by ASTM 1048 (Kind HS) as having a surface compression of not less than 3,500 pounds per square inch (psi) or an edge compression of not less than 5,500 psi. Heat-Strengthened glass is approximately two times as strong as annealed glass of the same thickness and has a much increased thermal endurance. Heat-Strengthened glass is approximately two times as strong as annealed glass of the same thickness and has a much increased thermal endurance. Heat-Strengthened glass is considered a safety glass and will not completely dice as will fully tempered glass.

Heat-Treated

Term sometimes used for both fully-tempered glass and heat-strengthened glass.
Heated AG Parts: Parts which have a heater grid (backlights) or metallic coating (windshields) used to defrost the part.

Heated Urethane

A type of adhesive that is heated to a prescribed temperature before application. The heat "pre-cures" the adhesive for faster release of the vehicle.

Hermetically Sealed Unit

An insulating glass unit made up of two liters of glass, separated by a spacer, or equivalent product (at the full perimeter), which is filled with a moisture absorbing material. The unit is then completely sealed, creating a moisture-free, clean, dead-air space.

High-Transmission Glass

Glass which transmits an exceptionally high percentage of visible light.

Hot Shot

Customer order filled and sent for delivery immediately after the order is received.

HUD

Name for technology in which the vehicle's instrument readings are projected onto the windshield. The replacement windshield for vehicles with HUD is more expensive than for those which are not HUD equipped.

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Idler Guides

Devices used to secure rollable windows.

Impact

This is the most common break. It occurs when an object hits the windshield.

Impact Site

The actual location on the outside layer of glass, where it was struck by an object (usually a stone). Typically a small piece of glass is missing.

Insulating Glass

Insulating glass refers to two pieces of glass spaced apart and hermetically sealed to form a single glazed unit with an air space between. Heat transmission through this type of glass may be as low as half the without such an air space. It is also called Double Glazing.

Interchange

Two or more parts with different NAGS numbers which are used for the same fit application.

Interior Glazed

Glass set from the interior of the building.

Interlayer

A layer of standard or polycarbonate-compatible polyvinyl butyl or of urethane, used to bind two or more pieces of glass or glass and polycarbonate sheets onto a laminated unit.

Item Number

An internal part number assigned by the BMS to every part or product carried by the company.

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Knife

A tool used for cutting the adhesive or sealant to allow for the removal of an AG part from the vehicle.

Knote

A small transparent body of incompletely assimilated glass.

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Laminate

Vinyl inner layer of laminated glass.

Laminated Glass

A type of safety glass produced when a layer of vinyl or PVB is bonded between two or more pieces of glass to produce a single unit.

Lap Shear Strength

The strength demonstrated by the diagonal pull of two substrates until adhesive failure. The name comes from the lap joint created by the test samples and the shear action used to pull the samples apart.

Lead Time

The length of time it takes for a manufacturer or distributor to produce or pull an order for products, plus delivery time - usually measured from the day an order is placed to the day it is delivered.

Leading Edge Void

An area at and parallel to the edge that is not coated with ceramic frit. Standard characteristic of roll coating equipment.

Legs

Short cracks that emanate from a break.

List Price

The price to which discounts are applied to calculate the net price.

Live Load

Load force due to weight of non-permanent attachments much as people, glazing rigs, washing rigs.

Lite

A single pane of glass or AG part.

Locator Tapes

Tapes used to align the glass to the vehicle body during a dry set of the glass. (See Dry Set.)

Long Crack

A crack on the windshield of more than 6 inches (15.24 cm). See also: Crack.

Low-E or Low-Emissivity

Is to have a low rate of emitting (radiating) absorbed radiant energy. The radiant energy (heat) is, in effect, reradiated toward it's source.

LTL

Less than a full truckload shipment.

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Mirror Button Adapter

see ("Button") Usually a plastic adapter used to permit the replacement of the rearview mirror when the button supplied on the windshield does not fit the rearview mirror bracket.

Mobile Unit

A vehicle, usually a van or light truck, properly equipped with repair and safety equipment and tools, driven to an auto glass repair customer's home or place of business. Glass repairs are made from the vehicle.

Molding

Similar to "Gasket" - fitted around the glass to finish or "trim out" an installation.

MOPAR

Chrysler brand AG/ARG-MOP.

Monolithic

A glazing assembly construction consisting of only one lite or pane of glass, polycarbonate, acrylic, or plastic.

Mullion

An intermediate connecting member used to "marry" two or more windows or patio doors together in a single rough opening without sacrificing air or watertight performance. A mullion also can give added strength to connections for structural stability.

Muntins

A decorative design in cutups of glass lites. Examples:
1.) Painted muntin grids applied to an interior lite of glass in a sealed insulating glass unit to simulate cut-ups of glass lites either in colonial or diamond patterns.
2.) Use of aluminum muntin bar between lites of glass units to simulate glass cutups.
3.) Use of actual vertical and horizontal bars to divide a window into smaller lites of glass. The bars are termed muntin glass.

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NAGS

National Auto Glass Specifications. The company which assigns NAGS numbers and suggested "list" prices which are customarily used for ARG. NAGS Catalog list the parts and applications. NAGS Calculators show the "NAGS List Prices".

NAGS List Price

(See NAGS) The list prices in the NAGS Calculator which are calculated by applying a formula to the manufacturer's "Truckload List Price".

NAGS Multiplier

A factor applied to the NAGS list price to calculate cost and selling prices.

Net Price

Actual price paid for a part or product after all applicable discounts are applied.

Net Price Addendum

The list of parts which are net priced by the company instead of using the NAGS Calculator as the basis for establishing selling prices.

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Obsolescence Credit

A credit or reduction on the invoice - usually based on a percentage of dollar purchases of tempered parts - given by most ARG manufacturers to reduce the distributors financial exposure resulting from parts becoming obsolete.

Obsolescence Policy

Instructions which describe the company's policy including the proper inventory accounting for obsolete AG parts.

OE/OEM

OE means Original Equipment and is a part or product made by the OEM (Original Equipment Manufacturer). OEM's may also produce many non-OE parts, which are usually described as "Original Equipment Quality".

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Paint Band

See ceramic paint band.

Patterned Glass

(also Rolled or Rough Rolled Glass) One type of rolled glass having a pattern impressed on one or both sides. Used extensively for light control and decorative glazing.

Perpetual Inventory

The record of parts in inventory valued at standard cost and updated when parts are added and removed.

Pinchweld

The metal flange in the vehicle opening where AG is installed.

Pinhole

Small round area where there is an absence of coating.

Polished Wired Glass

Wired glass that has been ground and polished on both surfaces.

PPV

See "Purchase Price Variance".

Prefix Codes

(DW, DV, DT, FW, FB, etc.) Prefixes of ARG parts which denote the application, for example DW=Domestic Windshield. For a complete listing and definitions refer to the NAGS catalog.

Premium Part

Original equipment part which normally carries a higher NAGS list and truckload list price then the same part number produced by other manufacturers.

Priming

Sealing of a porous surface so that compound will not stain, lose elasticity, shrink excessively, etc., (because of loss of oil or vehicle into the surround.) A sealant primer or surface conditioner may be used to promote adhesion of a curing type sealant to certain surfaces.

Privacy Parts

Description used for parts which have a coating added to the exterior surface of the glass to produce a mirror like reflection when viewed from the outside of the vehicle. See the NAGS Catalog for complete listing and definitions. Also see "Batch Privacy" glass.

Processed Glass

Glass in which the surface has been altered by etching, sandblasting, chipping, grinding, ceramic-enameling, etc., to change its light diffusion or to give decorative effects. Either or both surfaces may be so treated. Also glass which has been further treated (edge work, tempered, stained, etc.) after forming. 

Proprietary Parts

Term used for part numbers which are produced by only one manufacturer. With no competition for these parts, the manufacturer has more control over selling prices.

Purchase Price Variance

The difference between the net price of product and the inventory (account 511) value at standard cost.

Purchase Register

A monthly listing of invoices charged to each location.

Pyrolytic Coating

A coating applied during the manufacturing of the glass itself. Because they are actually part of the glass sheet, pyrolythic or "hard coat" surfaces are very durable and require no special handling.

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Quarter Glass

Back side windows in a vehicle.

Quarterlite

Side glass part which is not part of a door and closest to the backlite.

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Rabbet Depth

The depth of the glazing pocket. The minimum rabbet depth must be equal to the minimum recommended edge bite on the glass plus the minimum setting block height.

Reciprocal Pricing

Usually an agreement between two distributors to sell "buyouts" to each other at the same prices.

Reflective Glass

Glass with a reflective surface film to reduce heat and light transmission.

Regulator

A manually- or power-operated device which rolls a vehicle's window up and down.

Re-Pack

Term used for a windshield pallet which contains several different part numbers.

Reject Credit

Similar to "Obsolesence Credit" in the way it is issued - is used to credit the distributor for expected damage or defects in a shipment of windshields.

Resin

A solid organic material, generally not soluble in water, which has little or no tendency to crystallize. Resin is optically matched to auto glass, and is used to fill breaks and cracks.

Restocking Charge

A charge of 10-15 percent for returning a part to a distributor.

Retail Transfer Price

The price retail locations pay for materials purchased from distribution locations and is set by Corporate.

Reveal Molding

See "molding”

Rolled Glass

Glass formed by rolling including patterned and wired glass. As glass is drawn horizontally from the tank, figured, engraved, etched, machine rolls impress a pattern on the surface of the glass, varying from almost smooth to deeply marked geometric, fluted, or random overall designs. It is made 1/8-inch to 3/8-inch thickness.

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Safeguard

Another Chrysler brand identifier - see MOPAR.

Safety Glass

Glass which has been treated using processes, such as laminating or tempering, that should result in reduced risk of injury when broken.

Sandblasted Finish

A surface treatment for flat glass obtained by spraying the glass with hard particles so as to clip out and roughen one or both surfaces of the glass. The effect is to increase obscurity and diffusion, but can make the glass fragile and hard to clean.

Sash

The frame, including muntin bars when used, and including the rabbets to receive lites of glass, either with or without removable stops, and designed either for a face glazing or channel glazing.

Sealant

Compound used to fill and seal a joint or opening, as contrasted to a sealer which is a liquid used to seal a porous.

Scratch

Damage to the glass surface in the form of a line with length but little or no appreciable width.

Scratch (in coating)

A void in the coating which has length but little or no appreciable width.

Shaded or Shade Band

An area at the top of the windshield where the vinyl inner layer has been tinted to reduce glare.

Shaded Glass

Laminated glass in which a dark color has been added to the top section of the inner vinyl layer to improve driver visibility in glare. The color typically becomes lighter as the tint travels down the glass.

Shading Coefficient

Is the ratio of solar heat gain passing through a glazing system to the solar heat gain that occurs under the same conditions if the window were made of clear, unshaped double strength window glass. The lower the number, the better solar shading qualities of the glazing system.

Shard

A sharp piece or fragment of glass.

Shelf Life

Used in the glazing and sealant business as referring to the length of time a product maybe stored before beginning to lose its effectiveness. Manufacturers usually state the shelf life and the necessary storage conditions on the package.

Short Crack

A crack on the windshield of 6 inches (15.24 cm) or less. See also: Crack.

Sidelite

Side glass part which is not part of a door and is usually tempered safety glass.

Sight Line

Imaginary line around the perimeter of lites or panels corresponding to the top edge of stationary and removable stops, and the line to which sealants contracting the lites or panels are sometimes finished off.

Single Glazing

A single pane of glass.

Sleeves

Corrugated envelopes used for the individual packaging of tempered glass.

Sliders

Usually refers to the sliding back glass assembly in pickups, and to van windows which movable section that slide (to open or close) in a track instead of being hinged or being part of a mechanism used to "roll" the part up or down.

Sloped Glazing

A single pane of glass.

Solar Glass
(or Solar Control Glass)

Manufacturer's term for glass that has been treated or specially tinted during the production process to reduce the sun's rays to protect, and reduce heat buildup in the vehicle interior.

Solvent

A liquid in which another substance can be dissolved.

Spacers

(Shims) Small blocks of composition, neoprene, etc., placed on each side of lites or panels to center them in the channel and maintain uniform width of sealant beads. Prevent excessive sealant distortion.

Spandrel

That portion of the exterior wall of a multistory commercial building that covers the area below the still of the vision glass installation and the area above the head of the glass installation below.

Spandrel Glass

Heat-strengthened flat glass with a colored-ceramic coating adhered to the back by a heat fusion process. It has double the strength of annealed glass of the same size and thickness, enabling it to withstand greater uniform loads and thermal stresses. Spandrel glass cannot be re-cut after heat strengthening. It is used as fixed opaque colored glass on buildings in front of floor slabs and columns. It is available in a wide array of colors.

Sputter Coating

A micro-thin metallic oxide coating vacuum-deposited on the surface of glass after manufacturing. Sputter coatings are vulnerable to moisture and abrasion and must be enclosed in sealed insulating window units.

Stain

Attack of a glass surface by water or other solutions involving:
A. Leaching of sodium ions to the surface of the glass.
B. An increase in pH on the glass surface.
C. The breaking of silica bonds in the glass structure.
If this process advances to c, the glass will have blotched, streaked, cloudy appearance and cannot be restored to pristine condition short of grinding and polishing the damage away, a process that is generally more expensive than simply replacing the glass.

Standard Cost

The weighted average cost of parts expressed as multiplier applied to NAGS list prices for each category. (DW, FW, DT, etc.)

Star Break

Damage to a windshield marked by various-sized cracks radiating from the central impact point.

Stone Break

A break on the outer layer of a laminated windshield. Typical stone breaks are star breaks, bullseyes or combination breaks.

Stones

Crystalline contaminations in the glass, usually pieces of undissolved or crystalline silica, bits of refractory, or crystals due to devitrification. Stones are detrimental to appearance and may seriously weaken the glass, particularly if present in highly stressed areas.

Stress Cracks

Cracks resulting from unusual forces acting on the glass body.

Structural Glazing

Is based on the use of a sealant not only as a weather seal but also for the structural transfer of loads from the glazing panel to its perimeter support system. Only certain specific sealant formulations are suitable for this purpose.

Structural Glazing Gaskets

Cured elastomeric channel-shaped extrusions used in place of a conventional sash to install glass products onto structurally sprouting sub-frames, with the pressure of sealing exerted by the insertion of separate lockstrip wedging splines.

Substrate

A hard surface, such as glass or metal, to which a sealant or adhesive is bonded. It is used to test adhesive product strengths.

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T-Part

An AG part which is laminated or tempered and is flat - not curved.

Tempered Glass

Glass which has been through a heating/cooling process which strengthens the part and causes the part to break into smaller pieces when broken.

Terms

Conditions for payment of the vendor invoice usually including the cash discount allowed and the number of days allowed before payment is due.

Tinted Glass

Color has been added to "tint" the glass - usually green or blue, but also gray or bronze (brown), as opposed to clear which has no color added.

TL

Abbreviation for "truckload".

Total Solar Absorption

The percent of incident solar radiation that is absorbed by a glazing system.

Total Solar Reflectance

The percent of solar radiation that is reflected by a glazing system.

Total Solar Transmittance

The percent of incident solar radiation that directly passes through a glazing system.

Toxic

Poisonous or dangerous to humans by contact resulting in eye or skin irritation, or if swallowed or inhaled.

Transfer Price

See "retail transfer price".

Translucent

Permitting light to come through but diffusing it so that objects on the other side appear vague, distorted or imperfect.

Transmittance

The ability of the glass to transmit solar energy in the visible light, the ultraviolet, and the infrared ranges, centrally measured in percentages of each.

Transparent

Permitting light to come through without distortions so that objects on the other side can be seen clearly.

Triple Glazing

Windows that are made of three panes of glass with air space between the lites, and may be filled with argon or other gases for increased energy efficiency.

Truckload

In ARG refers to a full trailer load of glass or related products, and meets the minimum quantities or weight as defined by the vendor to qualify for the lowest price available to the customer.

Truckload List Price

The price of a part which is included in the manufacturer's "Truckload Schedule" or "Product Offering" which is used as the basis for sales to distributors. The most commonly used truckload schedule in the industry is PPG's.

Twist