ASTM O-Rings | McMaster-Carr

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System of Measurement

ID

Width

Cross Section Shape

OD

Dash Number

Material

Hardness

Hardness Rating

Color

For Use With

Diluted Salt Solutions

Fluorinated Solvents

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

Ammonium Hydroxide

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

Specifications Met

ASTM D1056 Type 2 Class D Grade 3

Fed. Spec. GGG-E-950

NFPA (National Fluid Power Association) Standard

Minimum Temperature

-249° F to -100° F

-99° F to -50° F

-49° F to -1° F

Greater than 0° F

Seal ID

Core Color

RoHS

REACH

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Environment

Food and Beverage

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10,875 Products

Sealing

O-Rings

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

10,538 products

O-Ring Cord Stock

O-Ring Cord Stock

Cut to length to create customized seals

Wear Rings

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

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.)