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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-451 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 10.975 | I.D. Tolerance (±) N/A 0.060 | O.D. (REF) (inches) N/A 11.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 11 | Nominal O.D. (inches) N/A 11 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 278.8 | Metric O.D. (mm) N/A 292.7 |
1-450 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 10.475 | I.D. Tolerance (±) N/A 0.060 | O.D. (REF) (inches) N/A 11.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 10 1/2 | Nominal O.D. (inches) N/A 11 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 266.1 | Metric O.D. (mm) N/A 280.0 |
1-449 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 9.975 | I.D. Tolerance (±) N/A 0.055 | O.D. (REF) (inches) N/A 10.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 10 | Nominal O.D. (inches) N/A 10 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 253.4 | Metric O.D. (mm) N/A 267.3 |
1-448 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 9.475 | I.D. Tolerance (±) N/A 0.055 | O.D. (REF) (inches) N/A 10.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 9 1/2 | Nominal O.D. (inches) N/A 10 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 240.7 | Metric O.D. (mm) N/A 254.6 |
1-447 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 8.975 | I.D. Tolerance (±) N/A 0.055 | O.D. (REF) (inches) N/A 9.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 9 | Nominal O.D. (inches) N/A 9 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 228.0 | Metric O.D. (mm) N/A 241.9 |
1-446 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 8.475 | I.D. Tolerance (±) N/A 0.055 | O.D. (REF) (inches) N/A 9.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 8 1/2 | Nominal O.D. (inches) N/A 9 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 215.3 | Metric O.D. (mm) N/A 229.2 |
1-445 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 7.975 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 8.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 8 | Nominal O.D. (inches) N/A 8 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 202.6 | Metric O.D. (mm) N/A 216.5 |
1-444 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 7.725 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 8.275 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 7 3/4 | Nominal O.D. (inches) N/A 8 1/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 196.2 | Metric O.D. (mm) N/A 210.2 |
1-443 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 7.475 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 8.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 7 1/2 | Nominal O.D. (inches) N/A 8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 189.9 | Metric O.D. (mm) N/A 203.8 |
1-442 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 7.225 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 7.775 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 7 1/4 | Nominal O.D. (inches) N/A 7 3/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 183.5 | Metric O.D. (mm) N/A 197.5 |
1-441 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 6.975 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 7 | Nominal O.D. (inches) N/A 7 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 177.2 | Metric O.D. (mm) N/A 191.1 |
1-440 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 6.725 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.275 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 6 3/4 | Nominal O.D. (inches) N/A 7 1/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 170.8 | Metric O.D. (mm) N/A 184.8 |
1-439 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 6.475 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 6 1/2 | Nominal O.D. (inches) N/A 7 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 164.5 | Metric O.D. (mm) N/A 178.4 |
1-438 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 6.225 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.775 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 6 1/4 | Nominal O.D. (inches) N/A 6 3/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 158.1 | Metric O.D. (mm) N/A 172.1 |
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 |
1-428 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 4.850 | I.D. Tolerance (±) N/A 0.033 | O.D. (REF) (inches) N/A 5.400 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 4 7/8 | Nominal O.D. (inches) N/A 5 3/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 123.2 | Metric O.D. (mm) N/A 137.2 |
1-427 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 4.725 | I.D. Tolerance (±) N/A 0.033 | O.D. (REF) (inches) N/A 5.275 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 4 3/4 | Nominal O.D. (inches) N/A 5 1/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 120.0 | Metric O.D. (mm) N/A 134.0 |