Explore our AS-568 & Extended Standard Size O-Rings
Unit of Measure

C/S (inches)

N/A 0.210

C/S Tolerance (±)

N/A 0.005

I.D. (inches)

N/A 7.475

I.D. Tolerance (±)

N/A 0.045

O.D. (REF) (inches)

N/A 7.895

Nominal C/S (inches)

N/A 3/16

Nominal I.D. (inches)

N/A 7 1/4

Nominal O.D. (inches)

N/A 7 7/8

Metric C/S (mm)

N/A 5.3

Metric I.D. (mm)

N/A 189.9

Metric O.D. (mm)

N/A 200.5
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