Air Seals | McMaster-Carr

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Seal ID

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Diluted Salt Solutions

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Force @ 100 psi

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

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DFARS Specialty Metals

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Export Control Classification Number (ECCN)

Sensor Ready

Retracted Length

6,034 Products

Sealing

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

189 products

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

20 products

Piston Seals

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

52 products

Packing Seals

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

231 products

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

67 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

Cushioning Seals

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

5 products

Wear Rings

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

16 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

Edge Seals

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

529 products

Measuring and Inspecting

Thermometer Air Purges

Blow dust and moisture off infrared thermometer transmitter lenses

1 product

Power Transmission

Hydraulic Cylinder Seals

Replace seals on the piston or rod end of hydraulic cylinders

36 products

Air Cylinders

Push and pull loads to do everything from stamping materials to sorting parts on conveyors

3,556 products

Cylinder Rod Glands

Replace the rod gland on hydraulic cylinders

13 products

Air Cylinder Mounts

Secure air cylinders to surfaces with brackets, rod clevises, and flanges

113 products

Cylinder Rod Locks

Hold the piston's position during an emergency stop or power loss to keep the load safely in place

6 products

Compressed Air Filter Seals

Replace O-rings in compressed air filters

23 products

Rod End Seals

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

16 products

Fluid Handling

Tube Fitting Rings

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

33 products

Air Knives

Create a sheet of high-velocity air that dries, cleans, and cools parts and equipment

121 products

Containers, Storage, and Furniture

Vacuum Sealers

Create an airtight seal around small parts to prevent damage from moisture and oxidation

6 products

Open-Top Bags

Close around material with a staple, twist tie, or heat sealer

4 products

Building and Machinery Hardware

Air Curtains

Mount above doorways to block dust, bugs, and fumes with an airstream while allowing people to enter

23 products