Plastic O-Rings | McMaster-Carr

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Viton® Fluoroelastomer

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1,862 Products

Sealing

O-Rings

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

979 products

Packing Seals

Fill in gaps around pump shafts, valve stems, and agitators to prevent leaks

154 products

Piston Seals

Prevent leaks inside pistons by creating a seal against the cylinder bore

43 products

Spring-Loaded Seals

Seal rods and pistons with a wider range of temperature and chemical resistance than U-cup seals

54 products

Wear Rings

Guide rods and pistons to prevent uneven wear and extend the life of seals

54 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

80 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

20 products

Buffering Seals

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

22 products

Wear Ring Stock

Cut to make wear rings that fit any rod or bore to prevent uneven wear and extend the life of seals

12 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

7 products

Packing Seal Lubricating Rings

Install between layers of packing seals to distribute lubricants evenly; also known as lantern rings

8 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

109 products

Manway Gaskets

Create a tight seal between the nozzle and lid of tank car manways

4 products

Backup Rings

Extend the life of O-rings and improve their performance under high pressure

169 products

Fastening and Joining

Sealing Washers

Prevent fluids from leaking around fasteners

57 products

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

1 product

Fabricating and Machining

Picks

Hold, separate, and position small parts such as wire and springs

61 products

Seal Pullers

Remove the seals around bearings

Small Parts Positioners

Position and install tiny springs and wires

5 products

Power Transmission

Round Belts

Flexible to send rotary power between unparallel shafts

16 products

Facility and Grounds Maintenance

Toilet Sealing Rings

Prevent leaks where toilets mount to the floor or wall

3 products