Standard Size O-Rings (Nominal Dimensions)
O-Rings
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 (5Mb) Catalog illustrated with full-size drawings of Standard Size O-Rings plus Dimensions and Tolerances.
Click here to view our 48 (5Mb) Catalog illustrated with full-size drawings of Standard Size O-Rings plus Dimensions and Tolerances.
Item # |
C/S (inches) |
C/S Tolerance (±) |
I.D. (inches) |
I.D. Tolerance (±) |
O.D. (REF) (inches) |
Nominal C/S (inches) |
Nominal I.D. (inches) |
Nominal O.D. (inches) |
Metric C/S (mm) |
Metric I.D. (mm) |
Metric O.D. (mm) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-903 | C/S (inches) N/A 0.064 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.301 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.429 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 1.6 | Metric I.D. (mm) N/A 7.6 | Metric O.D. (mm) N/A 10.9 |
1-308 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.350 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.770 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 3/8 | Nominal O.D. (inches) N/A 3/4 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 8.9 | Metric O.D. (mm) N/A 19.6 |
1-904 | C/S (inches) N/A 0.072 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.351 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.495 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 8.9 | Metric O.D. (mm) N/A 12.6 |
1-204 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.359 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.637 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 3/8 | Nominal O.D. (inches) N/A 5/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 9.1 | Metric O.D. (mm) N/A 16.2 |
1-012 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.364 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.504 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 3/8 | Nominal O.D. (inches) N/A 1/2 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 9.2 | Metric O.D. (mm) N/A 12.8 |
1-110 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.362 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.568 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 3/8 | Nominal O.D. (inches) N/A 9/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 9.2 | Metric O.D. (mm) N/A 14.4 |
1-309 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.412 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.832 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 7/16 | Nominal O.D. (inches) N/A 13/16 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 10.5 | Metric O.D. (mm) N/A 21.1 |
1-905 | C/S (inches) N/A 0.072 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.414 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.558 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 10.5 | Metric O.D. (mm) N/A 14.2 |
1-205 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.421 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.699 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 7/16 | Nominal O.D. (inches) N/A 11/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 10.7 | Metric O.D. (mm) N/A 17.8 |
1-013 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.426 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.566 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7/16 | Nominal O.D. (inches) N/A 9/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 10.8 | Metric O.D. (mm) N/A 14.4 |
1-111 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.424 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.630 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 7/16 | Nominal O.D. (inches) N/A 5/8 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 10.8 | Metric O.D. (mm) N/A 16.0 |
1-906 | C/S (inches) N/A 0.078 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.468 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.624 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 2.0 | Metric I.D. (mm) N/A 11.9 | Metric O.D. (mm) N/A 15.8 |
1-310 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.475 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.895 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 1/2 | Nominal O.D. (inches) N/A 7/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 12.1 | Metric O.D. (mm) N/A 22.7 |
1-206 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.484 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.762 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1/2 | Nominal O.D. (inches) N/A 3/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 12.3 | Metric O.D. (mm) N/A 19.4 |
1-014 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.489 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.629 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1/2 | Nominal O.D. (inches) N/A 5/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 12.4 | Metric O.D. (mm) N/A 16.0 |
1-112 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.487 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.693 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1/2 | Nominal O.D. (inches) N/A 11/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 12.4 | Metric O.D. (mm) N/A 17.6 |
1-907 | C/S (inches) N/A 0.082 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.530 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.694 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 2.1 | Metric I.D. (mm) N/A 13.5 | Metric O.D. (mm) N/A 17.6 |
1-311 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.537 | I.D. Tolerance (±) N/A 0.007 | O.D. (REF) (inches) N/A 0.959 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 9/16 | Nominal O.D. (inches) N/A 15/16 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 13.6 | Metric O.D. (mm) N/A 24.4 |
1-113 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.549 | I.D. Tolerance (±) N/A 0.007 | O.D. (REF) (inches) N/A 0.755 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 9/16 | Nominal O.D. (inches) N/A 3/4 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 13.9 | Metric O.D. (mm) N/A 19.2 |
1-207 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.549 | I.D. Tolerance (±) N/A 0.007 | O.D. (REF) (inches) N/A 0.827 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 9/16 | Nominal O.D. (inches) N/A 13/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 13.9 | Metric O.D. (mm) N/A 21.0 |
1-015 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.551 | I.D. Tolerance (±) N/A 0.007 | O.D. (REF) (inches) N/A 0.691 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 9/16 | Nominal O.D. (inches) N/A 11/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 14.0 | Metric O.D. (mm) N/A 17.6 |
1-312 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.600 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 1.022 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5/8 | Nominal O.D. (inches) N/A 1 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 15.2 | Metric O.D. (mm) N/A 26.0 |
1-114 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.612 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.818 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 5/8 | Nominal O.D. (inches) N/A 13/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 15.5 | Metric O.D. (mm) N/A 20.8 |
1-208 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.609 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.887 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 5/8 | Nominal O.D. (inches) N/A 7/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 15.5 | Metric O.D. (mm) N/A 22.5 |
1-016 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.614 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.754 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5/8 | Nominal O.D. (inches) N/A 3/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 15.6 | Metric O.D. (mm) N/A 19.2 |