Air Seals | McMaster-Carr

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System of Measurement

Bore Size

Stroke Length

Less than 50 mm

100 mm to 199 mm

200 mm to 249 mm

250 mm or greater

Rod Diameter

Seal ID

Linear Air Cylinder Type

Seal OD

Extended Length

Less than 100 mm

100 mm to 249 mm

250 mm to 499 mm

500 mm to 999 mm

1,000 mm or greater

Width

Mount Type

Actuation Type

Force @ 100 psi

Less than 100 lbf

100 lbf to 249.9 lbf

250 lbf to 499.9 lbf

500 lbf to 999.9 lbf

1,000 lbf or greater

For Use With

Ball Joint Rod Ends

Diluted Salt Solutions

Fluorinated Solvents

Synthetic Lubricants

Rod End Type

Internally Threaded

Maximum Temperature

Less than 150° F

150° F to 199° F

200° F to 249° F

250° F to 499° F

500° F or greater

Seal Width

Rod Thread Size

Sensor Ready

Not Sensor Ready

Retracted Length

Shaft Diameter

0.210" to 0.260"

0.217" to 0.256"

0.370" to 0.450"

0.374" to 0.453"

0.450" to 0.530"

0.453" to 0.492"

0.610" to 0.689"

0.610" to 0.690"

OD

Actuation Mechanism

Air Extend/Air Retract

Air Extend/Spring Retract

Air Retract/Spring Extend

RoHS

Compliant with Exemptions

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

How can we improve?

6,057 Products

Sealing

U-Cup Seals

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

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

Piston Seals

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

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

Head Seals

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

Spring-Loaded Seals

Spring-Loaded Seals

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

Packing Seals

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

Cushioning Seals

Cushioning Seals

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

Wear Ring Stock

Wear Ring Stock

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

Wear Rings

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

Edge Seals

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

Fluid Handling

Tube Fitting Rings

Tube Fitting Rings

Prevent leaks at tubing connection points

Air Knives

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

Power Transmission

Compressed Air Filter Seals

Compressed Air Filter Seals

Replace O-rings in compressed air filters

Cylinder Rod Glands

Cylinder Rod Glands

Replace the rod gland on hydraulic cylinders

Hydraulic Cylinder Seals

Hydraulic Cylinder Seals

Replace seals on the piston or rod end of hydraulic cylinders

Air Cylinders

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

Air Cylinder Mounts

Air Cylinder Mounts

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

Cylinder Rod Locks

Cylinder Rod Locks

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

Rod End Seals

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

Measuring and Inspecting

Thermometer Air Purges

Thermometer Air Purges

Blow dust and moisture off infrared thermometer transmitter lenses

Containers, Storage, and Furniture

Open-Top Bags

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

Vacuum Sealers

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

Building and Machinery Hardware

Air Curtains

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

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