ASTM O-Rings | McMaster-Carr

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System of Measurement

ID

Width

Cross Section Shape

OD

Dash Number

Hardness

Material

Color

Hardness Rating

For Use With

Diluted Salt Solutions

Fluorinated Solvents

Liquid Insecticides

Synthetic Lubricants

Transmission Fluid

Fractional Width

Fractional ID

Core Material

Silicone Rubber

Viton® Fluoroelastomer

Fractional OD

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 499° F

500° F to 999° F

Thickness

Minimum Temperature

-249° F to -100° F

-99° F to -50° F

-49° F to -1° F

Greater than 0° F

Seal ID

REACH

RoHS

Core Color

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

Export Control Classification Number (ECCN)

DFARS Specialty Metals

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13,375 Products

Sealing

O-Rings

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

12,851 products

Cord Stock

Cut to length to create customized seals

Backup Rings

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

Wear Rings

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

Tube Fitting Gaskets

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

Raw Materials

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

Fabricating and Machining

Picks

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

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