Rubber O-Rings | McMaster-Carr

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System of Measurement

ID

Width

Cross Section Shape

OD

Dash Number

Color

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Hardness Rating

For Use With

Diluted Salt Solutions

Fluorinated Solvents

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

Fractional Width

Fractional ID

Fractional OD

Core Material

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 499° F

500° F to 999° F

Thickness

0.019" to 0.043"

0.021" to 0.041"

0.026" to 0.036"

0.035" to 0.045"

0.036" to 0.044"

0.036" to 0.056"

0.042" to 0.052"

0.045" to 0.055"

0.046" to 0.078"

0.047" to 0.077"

0.047" to 0.109"

0.052" to 0.072"

Seal ID

Specifications Met

Minimum Temperature

-249° F to -100° F

-99° F to -50° F

-49° F to 0° F

Greater than 0° F

RoHS

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Seal OD

Food Industry Standard

3-A Sanitary Standard

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11,745 Products

Sealing

O-Rings

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

O-Ring Cord Stock

O-Ring Cord Stock

Cut to length to create customized seals

Backup Rings

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

O-Ring Bonding Kits

O-Ring Bonding Kits

Everything needed to make O-rings

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

U-Cup Seals

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

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

Rod Seals

Maintain pressure inside cylinders and prevent fluid leaks

Piston Seals

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

Head Seals

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

Cushioning Seals

Cushioning Seals

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

Buffering Seals

Buffering Seals

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

Hose Washers

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

Fastening and Joining

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Power Transmission

Round Belts

Flexible to send rotary power between unparallel shafts

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