Flat Ring Seals | McMaster-Carr

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System of Measurement

OD

ID

Cross Section Shape

Material

Silicon Carbide

Stainless Steel

Thickness

0.010" to 0.020"

0.014" to 0.016"

0.018" to 0.025"

0.019" to 0.043"

0.021" to 0.041"

0.024" to 0.038"

0.026" to 0.036"

0.028" to 0.034"

0.033" to 0.047"

0.035" to 0.045"

0.035" to 0.070"

0.036" to 0.044"

0.036" to 0.056"

0.041" to 0.051"

0.042" to 0.052"

Color

Shape

Ring with Bolt Holes

Ring with Tines

Screw Size

For Use With

Diluted Salt Solutions

Faucet Sprayers

Fluorinated Solvents

Synthetic Lubricants

Transmission Fluid

Acetic Acid (White Vinegar)

Hardness

Pipe Size

Dash Number

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

Hardness Rating

Fractional ID

Fractional Width

Washer Type

Fractional OD

Seal ID

For Flange ANSI Class

REACH

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Export Control Classification Number (ECCN)

How can we improve?

3,609 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

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

Drain Gaskets

Create a watertight seal between your drain and fixture without the mess of plumber's putty

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

Wear Rings

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

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

Shaft Repair Sleeves

Shaft Repair Sleeves

Cover worn shafts with a smooth and protective sealing surface without machining

Fastening and Joining

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Insulating Washers

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

Power Transmission

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

Fluid Handling

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Electrical

Electrical Enclosure Fasteners

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

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