Plastic Raw Materials | McMaster-Carr

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20,669 Products

Raw Materials

Plastic

A lightweight alternative to metal and glass

Garolite

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

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

Foam

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

Carbon Fiber

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

Hard Fiber

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

Kevlar

Super tough for protection against prolonged wear and abrasion

Aramid

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

Pigments and Dyes

Pigments and Dyes

Add color to liquids, mixtures, and materials

Additives and Fillers

Additives and Fillers

Mix into coatings, resins, polymers, and metal to boost strength, conductivity, and lubricity

Electrical

Thermal Interface Material

Thermal Interface Material

Dissipate heat away from electronic components

Circuit Boards

Create your own circuit board designs by adding components

Fluid Handling

Perforated Sheets

Perforated Sheets

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

Filter Mesh

Strain particles out of various substances

Filter Paper

Remove particles from liquids in lab testing and other filtration applications

Sintered Filters

Sintered Filters

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

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Tubing Samples

Test tubing material or hardness to confirm it works for your application

Fastening and Joining

Shims

Level, align, and adjust spacing on fasteners, shafts, and machine components

Shim Stock

Cut into custom shapes for leveling and aligning fasteners, machinery components, and more

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

Machine Key Stock

Machine Key Stock

Cut a custom length to transfer torque from shafts to components such as gears and sprockets

Fabricating and Machining

3D Printer Filaments

3D Printer Filaments

Run through filament 3D printers to form plastic parts

3D Printer Build Surfaces

3D Printer Build Surfaces

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

3D Printer Resins

3D Printer Resins

Create parts from resin 3D printers with greater detail than filament 3D printers

3D Printer Powders

3D Printer Powders

Create metal or plastic parts from powder bed fusion (PBF) printing systems

Mold Foaming Agents

Mold Foaming Agents

Mix into resin to reduce your part's weight and prevent warping and defects as it cools

Measuring and Inspecting

Metal Detector Calibration Kits

Metal Detector Calibration Kits

Test the sensitivity of food-processing metal detectors

Lighting

Light Lenses

Reduce glare from light bulbs and protect them from damage

Light Pipes

Concentrate and direct light from the bulb on a circuit board to a display

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