Sheet Squares | McMaster-Carr

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Durometer 20 OO

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DFARS Specialty Metals

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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-250° F or less

-249° F to -200° F

-199° F to -100° F

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CARB Compliant 17 CCR 93120

CPSC Compliant 16 CFR 1201 Category I and II

IMO FTP Code Part 1

For Use Outdoors

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Food and Beverage

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18,866 Products

Raw Materials

Aluminum

Lightweight, easy to machine, and corrosion resistant—all with material certificates for traceability

Steel

Strong, machinable, and weldable—all with material certificates for traceability

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

Copper

Our most conductive metal for electrical applications—all with material certificates for traceability

Brass

More machinable than copper and bronze—all with material certificates for traceability

Nickel

An upgrade from stainless steel to withstand harsh chemicals and acids—all with material certificates for traceability

Bronze

Better wear resistance than copper and brass—all with material certificates for traceability

Lead

A dense insulator often used to shield against radiation and absorb sound and vibration

Titanium

The most corrosion-resistant metal we offer—all with material certificates for traceability

Niobium

Conductive and corrosion resistant even at extreme temperatures—all with material certificates for traceability

Tin

Soft and malleable for forming gaskets and filters; also mixes with other metals to make solder

Tungsten

Our densest metal resists wear and heat to make end mills, heat shields, electrodes, and more

Plastic

A lightweight alternative to metal and glass

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

Fiberglass

A lightweight alternative to metal and wood widely used in electrical and structural applications

Garolite

A strong, machinable alternative to metal and plastic widely used in circuit boards and gears

Aramid

Strong, lightweight, and an excellent thermal insulator; also known as Nomex

Hard Fiber

Chemically treated to be hard and dense, this is the easiest composite to machine in our offering

Carbon Fiber

The strongest composite we offer; comparable in strength to 6061 aluminum but lighter in weight

Glass

Clear and highly heat and chemical resistant; often used in sights, lighting, and lab equipment

Ceramic

Hard and wear resistant, it also withstands corrosion and high temperatures

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

Wood

Commonly used to build ramps, crates, and prototypes or to make repairs

Carbon

An electrical conductor that’s often used in electronics and sensors

Graphite

Compressible or conductive for making high-temperature seals, furnace parts, and crucibles

Mica

An electrical insulator that resists high temperatures; use in circuit breakers and heating elements

Sealing

Gasket Material

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

Fabricating and Machining

Prototyping Foam

Prototyping Foam

Carve, mill, or sand into lightweight parts for testing

Electrical Power, Networking, and Controlling

Thermal Interface Pads

Thermal Interface Pads

Soft and flexible, so they conform to rough surfaces and fill gaps between two surfaces

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)