Compression Seals | McMaster-Carr

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DFARS Specialty Metals

Shape

Panel-Mount Mil. Spec. Connector

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Specifications Met

NFPA (National Fluid Power Association) Standard

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Fractional OD

20,093 Products

Most Likely Products

Edge Seals

Block dust, water, and wind from entering the gaps around doors and windows

529 products

Packing Seals

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

231 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

533 products

O-Rings

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

13,870 products

Hose Coupling Gaskets

Form tight seals on cam-and-groove, grip-lock, and twist-claw hose connections

94 products

Sealing Washers

Prevent fluids from leaking around fasteners

240 products

All Results

Sealing

Packing Seals

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

231 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

533 products

U-Cup Seals

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

198 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

50 products

Cushioning Seals

Reduce wear and noise in air-powered cylinders by blocking the piston from hitting the cylinder body

5 products

Spring-Loaded Seals

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

54 products

Head Seals

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

10 products

Wear Rings

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

54 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

Shaft Repair Sleeves

Cover worn shafts with a smooth and protective sealing surface without machining

21 products

Piston Seals

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

57 products

Buffering Seals

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

22 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

109 products

Packing Seal Lubricating Rings

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

8 products

Edge Seals

Block dust, water, and wind from entering the gaps around doors and windows

529 products

Rope Seals

Insulate the edges of oven, furnace, and boiler doors to keep heat in

135 products

Hose Coupling Gaskets

Form tight seals on cam-and-groove, grip-lock, and twist-claw hose connections

94 products

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

1,392 products

EMI/RFI Shielding Gaskets

Fit around enclosure doors or data connectors to prevent inaccurate signals and flickering displays

110 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

435 products

Drum Plug Gaskets

Form a tighter seal in drum openings than with a drum plug alone

7 products

Hose Washers

Place inside nozzles and spigots to prevent leaks in an attached hose

12 products

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

691 products

Drum Gaskets

Seal lids onto steel and stainless steel drums

6 products

Made-to-Order Gaskets

Send your exact specifications to get gaskets that fit precisely between surfaces

16 products

Gasket Makers

Seal irregular shapes and tiny crevices by applying a bead that hardens into a gasket

58 products

Boiler Gaskets

Resist heat and steam to form a leak-resistant seal around closures on boilers

44 products

Gasket Sealants

Seal gaskets on metal parts

4 products

Manway Gaskets

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

8 products

Drain Gaskets

Create a watertight seal between your drain and fixture without the mess of plumber's putty

3 products

O-Rings

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

13,870 products

Cord Stock

Cut to length to create customized seals

470 products

Backup Rings

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

360 products

Fastening and Joining

Sealing Washers

Prevent fluids from leaking around fasteners

240 products

Repair and Duct Tape

Permanently join or seal surfaces

2 products

Facility and Grounds Maintenance

Toilet Tank-to-Bowl Gaskets

Create a tight seal between a toilet tank and bowl

2 products

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

5 products

Raw Materials

Rubber

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

6 products

Power Transmission

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

16 products

Building and Machinery Hardware

Weatherstripping

Seal gaps around doors, windows, and frames

131 products

Surface Guards

Protect walls and other flat surfaces from impact

25 products

Fluid Handling

Tube Fitting Rings

Snap onto push-to-connect fittings to identify different tubing lines

33 products

Material Handling

Dock Door Seals

Close the gap between dock doors and trailers to keep heated or cooled air in and dust out

9 products