Plastic Flat Stock | McMaster-Carr

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Electrically Insulating

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11,899 Products

Raw Materials

Plastic

A lightweight alternative to metal and glass

6,760 products

Garolite

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

1,361 products

Foam

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

1,656 products

Carbon Fiber

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

134 products

Fiberglass

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

210 products

Rubber

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

316 products

Aramid

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

10 products

Fabric

Use to cover, clean, and insulate objects

122 products

Hard Fiber

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

62 products

Kevlar

Super tough for protection against prolonged wear and abrasion

5 products

Wood

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

16 products

Felt

Thicker and more absorbent than fabric for insulating, polishing, cushioning, and gasketing

47 products

Communication

Tags

Hang throughout facilities to convey information

228 products

Fastening and Joining

Shim Stock

Cut into custom shapes to align, space, and level components on dies, presses, and machinery

194 products

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

9 products

Electrical

Circuit Boards

Create your own circuit board designs by adding components

70 products

Facility and Grounds Maintenance

Tarps

Shield equipment from weather, flames, chemicals, and more

286 products

Leak Drainage Tarps

Protect work areas and equipment from overhead leaks

31 products

Drop Cloths

Cover floors to protect them from spills, splatters, and dirty shoes

4 products

Heating, Ventilation, and Air Conditioning

Thermal Insulation Sheets

Line the walls of furnaces, freezers, ductwork, and buildings to keep heat in or out

117 products

Pipe Insulation

Fit around pipe, tubing, and tanks to reduce heat loss or condensation

26 products

Fabricating and Machining

3D Printer Build Surfaces

Stick on top of printer beds for more accurate parts than those made on bare beds

28 products

Material Handling

Foam Wrap

Cushion items with less bulk than bubble wrap to protect them while shipping and storing

15 products

Corrugated Sheets

Slide between pallets and stacked items to protect them from damage or reinforce the bottom of boxes

10 products

Building and Machinery Hardware

Temporary Floor Protectors

Protect floors from stains, dirt, and wear during painting and remodeling work

11 products

Fluid Handling

Filter Fabric

Fit into irregular shapes and take contaminants out of liquid

25 products

Filter Mesh

Strain particles out of various substances

108 products

Perforated Sheets

Filter, sort, separate, and strain liquid or dry material

21 products

Sintered Filters

Tiny holes let particles such as air, gas, and vapor pass through while trapping contaminants

9 products