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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-437 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 5.975 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 6 | Nominal O.D. (inches) N/A 6 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 151.8 | Metric O.D. (mm) N/A 165.7 |
1-436 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 5.850 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.400 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 5 7/8 | Nominal O.D. (inches) N/A 6 3/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 148.6 | Metric O.D. (mm) N/A 162.6 |
1-435 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 5.725 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.275 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 5 3/4 | Nominal O.D. (inches) N/A 6 1/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 145.4 | Metric O.D. (mm) N/A 159.4 |
1-434 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 5.600 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.150 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 5 5/8 | Nominal O.D. (inches) N/A 6 1/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 142.2 | Metric O.D. (mm) N/A 156.2 |
1-433 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 5.475 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 5 1/2 | Nominal O.D. (inches) N/A 6 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 139.1 | Metric O.D. (mm) N/A 153.0 |
1-432 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 5.350 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.900 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 5 3/8 | Nominal O.D. (inches) N/A 5 7/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 135.9 | Metric O.D. (mm) N/A 149.9 |
1-431 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 5.225 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.775 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 5 1/4 | Nominal O.D. (inches) N/A 5 3/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 132.7 | Metric O.D. (mm) N/A 146.7 |
1-430 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 5.100 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.650 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 5 1/8 | Nominal O.D. (inches) N/A 5 5/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 129.5 | Metric O.D. (mm) N/A 143.5 |
1-429 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 4.975 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 5 | Nominal O.D. (inches) N/A 5 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 126.4 | Metric O.D. (mm) N/A 140.3 |
1-361 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 5.975 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.395 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 6 | Nominal O.D. (inches) N/A 6 3/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 151.8 | Metric O.D. (mm) N/A 162.4 |
1-360 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 5.850 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.270 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5 7/8 | Nominal O.D. (inches) N/A 6 1/4 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 148.6 | Metric O.D. (mm) N/A 159.3 |
1-359 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 5.725 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.145 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5 3/4 | Nominal O.D. (inches) N/A 6 1/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 145.4 | Metric O.D. (mm) N/A 156.1 |
1-358 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 5.600 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.020 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5 5/8 | Nominal O.D. (inches) N/A 6 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 142.2 | Metric O.D. (mm) N/A 152.9 |
1-357 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 5.475 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.895 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5 1/2 | Nominal O.D. (inches) N/A 5 7/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 139.1 | Metric O.D. (mm) N/A 149.7 |
1-356 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 5.350 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.770 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5 3/8 | Nominal O.D. (inches) N/A 5 3/4 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 135.9 | Metric O.D. (mm) N/A 146.6 |
1-355 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 5.225 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.645 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5 1/4 | Nominal O.D. (inches) N/A 5 5/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 132.7 | Metric O.D. (mm) N/A 143.4 |
1-354 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 5.100 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.520 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5 1/8 | Nominal O.D. (inches) N/A 5 1/2 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 129.5 | Metric O.D. (mm) N/A 140.2 |
1-353 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 4.975 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.395 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 5 | Nominal O.D. (inches) N/A 5 3/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 126.4 | Metric O.D. (mm) N/A 137.0 |
1-053 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 5.989 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 6.129 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 6 | Nominal O.D. (inches) N/A 6 1/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 152.1 | Metric O.D. (mm) N/A 155.7 |
1-052 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 5.739 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.879 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5 3/4 | Nominal O.D. (inches) N/A 5 7/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 145.8 | Metric O.D. (mm) N/A 149.3 |
1-051 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 5.489 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.629 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5 1/2 | Nominal O.D. (inches) N/A 5 5/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 139.4 | Metric O.D. (mm) N/A 143.0 |
1-050 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 5.239 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5 1/4 | Nominal O.D. (inches) N/A 5 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 133.1 | Metric O.D. (mm) N/A 136.6 |
1-049 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 4.989 | I.D. Tolerance (±) N/A 0.037 | O.D. (REF) (inches) N/A 5.129 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5 | Nominal O.D. (inches) N/A 5 1/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 126.7 | Metric O.D. (mm) N/A 130.3 |
1-258 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 5.984 | I.D. Tolerance (±) N/A 0.035 | O.D. (REF) (inches) N/A 6.262 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 6 | Nominal O.D. (inches) N/A 6 1/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 152.0 | Metric O.D. (mm) N/A 159.1 |
1-257 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 5.859 | I.D. Tolerance (±) N/A 0.035 | O.D. (REF) (inches) N/A 6.137 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 5 7/8 | Nominal O.D. (inches) N/A 6 1/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 148.8 | Metric O.D. (mm) N/A 155.9 |