Polyurethane Rounds | McMaster-Carr

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1,938 Products

Raw Materials

Rubber

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

329 products

Foam

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

26 products

Building and Machinery Hardware

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

318 products

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

10 products

Bellows

Prevent dust and debris from damaging moving parts

18 products

Power Transmission

Round Belts

Flexible to send rotary power between unparallel shafts

230 products

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

19 products

Sleeve Bearings

With no moving parts, the plainest type of bearing

6 products

Idler Rollers

Guide boxes and parts as they pass through conveyor systems

8 products

Flexible Shaft Coupling Spiders

2 products

Fastening and Joining

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

44 products

Sealing

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

465 products

U-Cup Seals

With a lip on both the inside and outside edges, they can be used for sealing rods and pistons

122 products

Head Seals

Maintain a seal even under fluctuating pressure; more reliable than an O-ring with a backup ring

10 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

30 products

Buffering Seals

Protect hydraulic cylinders from pressure spikes and shock in high-pressure applications

13 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

80 products

Backer Rods

Insert into gaps before caulking to reduce how much sealant you need and improve adhesion

3 products

Material Handling

Wheels

Move objects with ease

187 products

Skate Wheels

Replace wheels on skate wheel conveyors or add wheels for a custom setup

8 products

Drum Dollies

Instead of tilting heavy loads on drum trucks, roll drums upright to where you need them

1 product

Fabricating and Machining

Polishing Bobs

Attach to a drill or grinder to polish small and hard-to-reach areas

7 products

Containers, Storage, and Furniture

Drums

Ship and store large volumes of liquid or dry materials

2 products