Brake Fluids O-Rings | McMaster-Carr

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System of Measurement

ID

Cross Section Shape

OD

Width

Dash Number

Material

321 Stainless Steel

Core Material

Silicone Rubber

Viton® Fluoroelastomer

Hardness Rating

Maximum Temperature

Less than 250° F

250° F to 299° F

300° F to 499° F

500° F to 999° F

1,000° F or greater

Color

Fractional ID

Hardness

Fractional Width

Fractional OD

Core Color

Minimum Temperature

-250° F or less

-249° F to -100° F

-99° F to -50° F

-49° F to 0° F

Greater than 0° F

Thickness

Seal ID

Seal OD

REACH

RoHS

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Specifications Met

NFPA (National Fluid Power Association) Standard

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2,450 Products

Sealing

O-Rings

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

Backup Rings

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

O-Ring Cord Stock

O-Ring Cord Stock

Cut to length to create customized seals

Piston Seals

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

Wear Rings

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

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

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

Rod Wipers

Scrape dirt off rods to keep the inside of cylinders clean

U-Cup Seals

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

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