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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-001 | 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 |
40-70 | C/S (inches) N/A 0.040 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.070 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.150 | Nominal C/S (inches) N/A 1/32 | Nominal I.D. (inches) N/A 5/64 | Nominal O.D. (inches) N/A 9/64 | Metric C/S (mm) N/A 1.0 | Metric I.D. (mm) N/A 1.8 | Metric O.D. (mm) N/A 3.8 |
1-002 | C/S (inches) N/A 0.050 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.042 | I.D. Tolerance (±) N/A 0.004 | O.D. (REF) (inches) N/A 0.142 | Nominal C/S (inches) N/A 3/64 | Nominal I.D. (inches) N/A 3/64 | Nominal O.D. (inches) N/A 9/64 | Metric C/S (mm) N/A 1.3 | Metric I.D. (mm) N/A 1.1 | Metric O.D. (mm) N/A 3.6 |
1-003 | C/S (inches) N/A 0.060 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.056 | I.D. Tolerance (±) N/A 0.004 | O.D. (REF) (inches) N/A 0.176 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1/16 | Nominal O.D. (inches) N/A 11/64 | Metric C/S (mm) N/A 1.5 | Metric I.D. (mm) N/A 1.4 | Metric O.D. (mm) N/A 4.5 |
1-004 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.070 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.210 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5/64 | Nominal O.D. (inches) N/A 13/64 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 1.8 | Metric O.D. (mm) N/A 5.3 |
1-005 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.101 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.241 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7/64 | Nominal O.D. (inches) N/A 15/64 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 2.6 | Metric O.D. (mm) N/A 6.1 |
1-006 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.114 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.254 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1/8 | Nominal O.D. (inches) N/A 1/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 2.9 | Metric O.D. (mm) N/A 6.5 |
1-007 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.145 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.285 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5/32 | Nominal O.D. (inches) N/A 9/32 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 3.7 | Metric O.D. (mm) N/A 7.2 |
1-008 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.176 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.316 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 3/16 | Nominal O.D. (inches) N/A 5/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 4.5 | Metric O.D. (mm) N/A 8.0 |
1-009 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.208 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.348 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7/32 | Nominal O.D. (inches) N/A 11/32 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 5.3 | Metric O.D. (mm) N/A 8.8 |
1-010 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.239 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1/4 | Nominal O.D. (inches) N/A 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 6.1 | Metric O.D. (mm) N/A 9.6 |
1-011 | C/S (inches) N/A 0.070 | 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 0.441 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5/16 | Nominal O.D. (inches) N/A 7/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 7.6 | Metric O.D. (mm) N/A 11.2 |
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 |
1-013 | 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 |
1-014 | 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 |
1-015 | 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 |
1-016 | 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 |
1-017 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.676 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.816 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 11/16 | Nominal O.D. (inches) N/A 13/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 17.2 | Metric O.D. (mm) N/A 20.7 |
1-018 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.739 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.879 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 3/4 | Nominal O.D. (inches) N/A 7/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 18.8 | Metric O.D. (mm) N/A 22.3 |
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 |
1-020 | 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 |
1-021 | 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 |
1-022 | 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 |
1-023 | 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 |
1-024 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.114 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.254 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 1/8 | Nominal O.D. (inches) N/A 1 1/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 28.3 | Metric O.D. (mm) N/A 31.9 |