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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-324 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.350 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.770 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 1 3/8 | Nominal O.D. (inches) N/A 1 3/4 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 34.3 | Metric O.D. (mm) N/A 45.0 |
1-521 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.413 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.765 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 1 7/16 | Nominal O.D. (inches) N/A 1 3/4 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 35.9 | Metric O.D. (mm) N/A 44.8 |
1-130 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.612 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.818 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 5/8 | Nominal O.D. (inches) N/A 1 13/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 40.9 | Metric O.D. (mm) N/A 46.2 |
1-522 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.475 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.827 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 1 1/2 | Nominal O.D. (inches) N/A 1 13/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 37.5 | Metric O.D. (mm) N/A 46.4 |
1-031 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.739 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.879 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 3/4 | Nominal O.D. (inches) N/A 1 7/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 44.2 | Metric O.D. (mm) N/A 47.7 |
1-131 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.674 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.880 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 11/16 | Nominal O.D. (inches) N/A 1 7/8 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 42.5 | Metric O.D. (mm) N/A 47.8 |
1-223 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.609 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.887 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 5/8 | Nominal O.D. (inches) N/A 1 7/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 40.9 | Metric O.D. (mm) N/A 47.9 |
1-325 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.475 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.895 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 1 1/2 | Nominal O.D. (inches) N/A 1 7/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 37.5 | Metric O.D. (mm) N/A 48.1 |
1-400 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 1.350 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.900 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 1 3/8 | Nominal O.D. (inches) N/A 1 7/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 34.3 | Metric O.D. (mm) N/A 48.3 |
1-132 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.737 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.943 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 3/4 | Nominal O.D. (inches) N/A 1 15/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 44.1 | Metric O.D. (mm) N/A 49.4 |
1-524 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.600 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.952 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 1 5/8 | Nominal O.D. (inches) N/A 1 15/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 40.6 | Metric O.D. (mm) N/A 49.6 |
1-032 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.864 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.004 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 7/8 | Nominal O.D. (inches) N/A 2 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 47.3 | Metric O.D. (mm) N/A 50.9 |
1-133 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.799 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.005 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 13/16 | Nominal O.D. (inches) N/A 2 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 45.7 | Metric O.D. (mm) N/A 50.9 |
1-224 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.734 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.012 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 3/4 | Nominal O.D. (inches) N/A 2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 44.0 | Metric O.D. (mm) N/A 51.1 |
1-326 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.600 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.020 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 1 5/8 | Nominal O.D. (inches) N/A 2 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 40.6 | Metric O.D. (mm) N/A 51.3 |
1-401 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 1.475 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 1 1/2 | Nominal O.D. (inches) N/A 2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 37.5 | Metric O.D. (mm) N/A 51.4 |
1-134 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.862 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.068 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 7/8 | Nominal O.D. (inches) N/A 2 1/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 47.3 | Metric O.D. (mm) N/A 52.5 |
1-526 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.725 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.077 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 1 3/4 | Nominal O.D. (inches) N/A 2 1/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 43.8 | Metric O.D. (mm) N/A 52.8 |
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 |
1-135 | 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 |
1-225 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.859 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.137 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 7/8 | Nominal O.D. (inches) N/A 2 1/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 47.2 | Metric O.D. (mm) N/A 54.3 |
1-327 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.725 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.145 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 1 3/4 | Nominal O.D. (inches) N/A 2 1/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 43.8 | Metric O.D. (mm) N/A 54.5 |
1-402 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 1.600 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.150 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 1 5/8 | Nominal O.D. (inches) N/A 2 1/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 40.6 | Metric O.D. (mm) N/A 54.6 |
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 |
1-528 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.850 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.202 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 1 7/8 | Nominal O.D. (inches) N/A 2 3/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 47.0 | Metric O.D. (mm) N/A 55.9 |