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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-208 | 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 |
1-310 | 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 |
1-909 | C/S (inches) N/A 0.097 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.706 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.900 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 2.5 | Metric I.D. (mm) N/A 17.9 | Metric O.D. (mm) N/A 22.9 |
1-019 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.801 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.941 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 13/16 | Nominal O.D. (inches) N/A 15/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 20.3 | Metric O.D. (mm) N/A 23.9 |
1-116 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.737 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.943 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 3/4 | Nominal O.D. (inches) N/A 15/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 18.7 | Metric O.D. (mm) N/A 24.0 |
1-910 | C/S (inches) N/A 0.097 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.755 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.949 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 2.5 | Metric I.D. (mm) N/A 19.2 | Metric O.D. (mm) N/A 24.1 |
1-209 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.672 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.950 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 11/16 | Nominal O.D. (inches) N/A 15/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 17.1 | Metric O.D. (mm) N/A 24.1 |
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 |
1-020 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.864 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 1.004 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7/8 | Nominal O.D. (inches) N/A 1 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 21.9 | Metric O.D. (mm) N/A 25.5 |
1-117 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.799 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.005 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 13/16 | Nominal O.D. (inches) N/A 1 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 20.3 | Metric O.D. (mm) N/A 25.5 |
1-210 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.734 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.012 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 3/4 | Nominal O.D. (inches) N/A 1 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 18.6 | Metric O.D. (mm) N/A 25.7 |
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 |
1-021 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.926 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 1.066 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 15/16 | Nominal O.D. (inches) N/A 1 1/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 23.5 | Metric O.D. (mm) N/A 27.1 |
1-118 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.862 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.068 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 7/8 | Nominal O.D. (inches) N/A 1 1/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 21.9 | Metric O.D. (mm) N/A 27.1 |
1-211 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.796 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.074 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 13/16 | Nominal O.D. (inches) N/A 1 1/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 20.2 | Metric O.D. (mm) N/A 27.3 |
1-313 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.662 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 1.084 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 11/16 | Nominal O.D. (inches) N/A 1 1/16 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 16.8 | Metric O.D. (mm) N/A 27.5 |
1-911 | C/S (inches) N/A 0.116 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.863 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.095 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 2.9 | Metric I.D. (mm) N/A 21.9 | Metric O.D. (mm) N/A 27.8 |
1-022 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.989 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.129 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 | Nominal O.D. (inches) N/A 1 1/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 25.1 | Metric O.D. (mm) N/A 28.7 |
1-119 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.924 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.130 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 15/16 | Nominal O.D. (inches) N/A 1 1/8 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 23.5 | Metric O.D. (mm) N/A 28.7 |
1-212 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.859 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.137 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 7/8 | Nominal O.D. (inches) N/A 1 1/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 21.8 | Metric O.D. (mm) N/A 28.9 |
1-314 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.725 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.147 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 3/4 | Nominal O.D. (inches) N/A 1 1/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 18.4 | Metric O.D. (mm) N/A 29.1 |
1-912 | C/S (inches) N/A 0.116 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.924 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.156 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 2.9 | Metric I.D. (mm) N/A 23.5 | Metric O.D. (mm) N/A 29.4 |
1-023 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.051 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.191 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 1/16 | Nominal O.D. (inches) N/A 1 3/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 26.7 | Metric O.D. (mm) N/A 30.3 |
1-120 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.987 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.193 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 | Nominal O.D. (inches) N/A 1 3/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 25.1 | Metric O.D. (mm) N/A 30.3 |
1-213 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.921 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.199 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 15/16 | Nominal O.D. (inches) N/A 1 3/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 23.4 | Metric O.D. (mm) N/A 30.5 |