Explore our AS-568 & Extended Standard Size O-Rings including our new 5/32" Nominal Cross Section O-Rings. Precision Associates' O-Rings are available off the shelf in several standard compounds. Or try O-Rings in one of 1,200+ specialty materials in 20 polymer groups, including Viton®, AFLAS®, EPDM, Nitrile, HNBR (HSN), XNBR, Neoprene®, Butyl, XNBR, Silicone, Fluorosilicone, Perfluoroelastomer, Urethane, Hypalon®, and Hydrin®.

Click here to view our 48 page (5Mb) Catalog illustrated with full-size drawings of Standard Size O-Rings plus Dimensions and Tolerances.
Unit of Measure

C/S (inches)

N/A 0.040

C/S Tolerance (±)

N/A 0.003

I.D. (inches)

N/A 0.029

I.D. Tolerance (±)

N/A 0.004

O.D. (REF) (inches)

N/A 0.109

Nominal C/S (inches)

N/A 1/32

Nominal I.D. (inches)

N/A 1/32

Nominal O.D. (inches)

N/A 3/32

Metric C/S (mm)

N/A 1.0

Metric I.D. (mm)

N/A 0.7

Metric O.D. (mm)

N/A 2.8
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