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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-366 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 7.225 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 7.645 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 7 1/2 | Nominal O.D. (inches) N/A 7 5/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 183.5 | Metric O.D. (mm) N/A 194.2 |
1-059 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 7.489 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 7.629 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7 1/4 | Nominal O.D. (inches) N/A 7 5/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 190.2 | Metric O.D. (mm) N/A 193.8 |
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 |
1-263 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 7.234 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 7.512 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 7 1/2 | Nominal O.D. (inches) N/A 7 1/2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 183.7 | Metric O.D. (mm) N/A 190.8 |
1-168 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 7.237 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 7.443 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 7 1/2 | Nominal O.D. (inches) N/A 7 7/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 183.8 | Metric O.D. (mm) N/A 189.1 |
1-365 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 6.975 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.395 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 7 | Nominal O.D. (inches) N/A 7 3/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 177.2 | Metric O.D. (mm) N/A 187.8 |
1-058 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 7.239 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 7.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7 1/2 | Nominal O.D. (inches) N/A 7 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 183.9 | Metric O.D. (mm) N/A 187.4 |
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 |
1-262 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 6.984 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.262 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 7 | Nominal O.D. (inches) N/A 7 1/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 177.4 | Metric O.D. (mm) N/A 184.5 |
1-167 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 6.987 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.193 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 7 | Nominal O.D. (inches) N/A 7 3/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 177.5 | Metric O.D. (mm) N/A 182.7 |
1-364 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 6.725 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.145 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 6 3/4 | Nominal O.D. (inches) N/A 7 1/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 170.8 | Metric O.D. (mm) N/A 181.5 |
1-057 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 6.989 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.129 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7 | Nominal O.D. (inches) N/A 7 1/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 177.5 | Metric O.D. (mm) N/A 181.1 |
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 |
1-261 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 6.734 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 7.012 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 6 3/4 | Nominal O.D. (inches) N/A 7 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 171.0 | Metric O.D. (mm) N/A 178.1 |
1-166 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 6.737 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.943 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 6 3/4 | Nominal O.D. (inches) N/A 6 15/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 171.1 | Metric O.D. (mm) N/A 176.4 |
1-363 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 6.475 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.895 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 6 1/2 | Nominal O.D. (inches) N/A 6 7/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 164.5 | Metric O.D. (mm) N/A 175.1 |
1-056 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 6.739 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.879 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 6 3/4 | Nominal O.D. (inches) N/A 6 7/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 171.2 | Metric O.D. (mm) N/A 174.7 |
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 |
1-260 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 6.484 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.762 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 6 1/2 | Nominal O.D. (inches) N/A 6 3/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 164.7 | Metric O.D. (mm) N/A 171.8 |
1-165 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 6.487 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.693 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 6 1/2 | Nominal O.D. (inches) N/A 6 11/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 164.8 | Metric O.D. (mm) N/A 170.0 |
1-362 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 6.225 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.645 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 6 1/4 | Nominal O.D. (inches) N/A 6 5/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 158.1 | Metric O.D. (mm) N/A 168.8 |
1-055 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 6.489 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.629 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 6 1/2 | Nominal O.D. (inches) N/A 6 5/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 164.8 | Metric O.D. (mm) N/A 168.4 |
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 |
1-259 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 6.234 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.512 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 6 1/4 | Nominal O.D. (inches) N/A 6 1/2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 158.3 | Metric O.D. (mm) N/A 165.4 |
1-164 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 6.237 | I.D. Tolerance (±) N/A 0.040 | O.D. (REF) (inches) N/A 6.443 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 6 1/4 | Nominal O.D. (inches) N/A 6 7/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 158.4 | Metric O.D. (mm) N/A 163.7 |