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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-135 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.925 | I.D. Tolerance (±) N/A 0.017 | O.D. (REF) (inches) N/A 2.131 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 15/16 | Nominal O.D. (inches) N/A 2 1/8 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 48.9 | Metric O.D. (mm) N/A 54.1 |
1-033 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.989 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.129 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 | Nominal O.D. (inches) N/A 2 1/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 50.5 | Metric O.D. (mm) N/A 54.1 |
1-136 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.987 | I.D. Tolerance (±) N/A 0.017 | O.D. (REF) (inches) N/A 2.193 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 2 | Nominal O.D. (inches) N/A 2 3/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 50.5 | Metric O.D. (mm) N/A 55.7 |
1-226 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.984 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.262 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 | Nominal O.D. (inches) N/A 2 1/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 50.4 | Metric O.D. (mm) N/A 57.5 |
1-329 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.975 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.395 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 2 | Nominal O.D. (inches) N/A 2 3/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 50.2 | Metric O.D. (mm) N/A 60.8 |
1-405 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 1.975 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 | Nominal O.D. (inches) N/A 2 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 50.2 | Metric O.D. (mm) N/A 64.1 |
1-530 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.975 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.327 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 2 | Nominal O.D. (inches) N/A 2 5/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 50.2 | Metric O.D. (mm) N/A 59.1 |
1-137 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.050 | I.D. Tolerance (±) N/A 0.017 | O.D. (REF) (inches) N/A 2.256 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 2 1/16 | Nominal O.D. (inches) N/A 2 1/4 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 52.1 | Metric O.D. (mm) N/A 57.3 |
1-034 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.114 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.254 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 1/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 53.7 | Metric O.D. (mm) N/A 57.3 |
1-138 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.112 | I.D. Tolerance (±) N/A 0.017 | O.D. (REF) (inches) N/A 2.318 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 5/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 53.6 | Metric O.D. (mm) N/A 58.9 |
1-227 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.109 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.387 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 3/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 53.6 | Metric O.D. (mm) N/A 60.6 |
1-330 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 2.100 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.520 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 1/2 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 53.3 | Metric O.D. (mm) N/A 64.0 |
1-406 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.100 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.650 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 5/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 53.3 | Metric O.D. (mm) N/A 67.3 |
1-532 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 2.100 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.452 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 7/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 53.3 | Metric O.D. (mm) N/A 62.3 |
1-139 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.175 | I.D. Tolerance (±) N/A 0.017 | O.D. (REF) (inches) N/A 2.381 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 2 3/16 | Nominal O.D. (inches) N/A 2 3/8 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 55.2 | Metric O.D. (mm) N/A 60.5 |
1-035 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.239 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 56.9 | Metric O.D. (mm) N/A 60.4 |
1-140 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.237 | I.D. Tolerance (±) N/A 0.017 | O.D. (REF) (inches) N/A 2.443 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 7/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 56.8 | Metric O.D. (mm) N/A 62.1 |
1-228 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.234 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.512 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 1/2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 56.7 | Metric O.D. (mm) N/A 63.8 |
1-331 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 2.225 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.645 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 5/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 56.5 | Metric O.D. (mm) N/A 67.2 |
1-407 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.225 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.775 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 3/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 56.5 | Metric O.D. (mm) N/A 70.5 |
1-534 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 2.225 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.577 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 9/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 56.5 | Metric O.D. (mm) N/A 65.5 |
1-141 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.300 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.506 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 2 5/16 | Nominal O.D. (inches) N/A 2 1/2 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 58.4 | Metric O.D. (mm) N/A 63.7 |
1-036 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.364 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.504 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 3/8 | Nominal O.D. (inches) N/A 2 1/2 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 60.0 | Metric O.D. (mm) N/A 63.6 |
1-142 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.362 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.568 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 2 3/8 | Nominal O.D. (inches) N/A 2 9/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 60.0 | Metric O.D. (mm) N/A 65.2 |
1-229 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.359 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.637 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 3/8 | Nominal O.D. (inches) N/A 2 5/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 59.9 | Metric O.D. (mm) N/A 67.0 |