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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-315 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.787 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.209 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 13/16 | Nominal O.D. (inches) N/A 1 3/16 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 20.0 | Metric O.D. (mm) N/A 30.7 |
1-020 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.864 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 1.004 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7/8 | Nominal O.D. (inches) N/A 1 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 21.9 | Metric O.D. (mm) N/A 25.5 |
1-118 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.862 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.068 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 7/8 | Nominal O.D. (inches) N/A 1 1/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 21.9 | Metric O.D. (mm) N/A 27.1 |
1-212 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.859 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.137 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 7/8 | Nominal O.D. (inches) N/A 1 1/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 21.8 | Metric O.D. (mm) N/A 28.9 |
1-316 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.850 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.270 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 7/8 | Nominal O.D. (inches) N/A 1 1/4 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 21.6 | Metric O.D. (mm) N/A 32.3 |
1-021 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.926 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 1.066 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 15/16 | Nominal O.D. (inches) N/A 1 1/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 23.5 | Metric O.D. (mm) N/A 27.1 |
1-119 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.924 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.130 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 15/16 | Nominal O.D. (inches) N/A 1 1/8 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 23.5 | Metric O.D. (mm) N/A 28.7 |
1-213 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.921 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.199 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 15/16 | Nominal O.D. (inches) N/A 1 3/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 23.4 | Metric O.D. (mm) N/A 30.5 |
1-317 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.912 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.334 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 15/16 | Nominal O.D. (inches) N/A 1 5/16 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 23.2 | Metric O.D. (mm) N/A 33.9 |
1-022 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.989 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.129 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 | Nominal O.D. (inches) N/A 1 1/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 25.1 | Metric O.D. (mm) N/A 28.7 |
1-120 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.987 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.193 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 | Nominal O.D. (inches) N/A 1 3/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 25.1 | Metric O.D. (mm) N/A 30.3 |
1-214 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.984 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.262 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 | Nominal O.D. (inches) N/A 1 1/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 25.0 | Metric O.D. (mm) N/A 32.1 |
1-318 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.975 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.395 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 1 | Nominal O.D. (inches) N/A 1 3/8 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 24.8 | Metric O.D. (mm) N/A 35.4 |
1-514 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 0.975 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.327 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 1 | Nominal O.D. (inches) N/A 1 5/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 24.8 | Metric O.D. (mm) N/A 33.7 |
1-023 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.051 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.191 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 1/16 | Nominal O.D. (inches) N/A 1 3/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 26.7 | Metric O.D. (mm) N/A 30.3 |
1-121 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.049 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.255 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 1/16 | Nominal O.D. (inches) N/A 1 1/4 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 26.6 | Metric O.D. (mm) N/A 31.9 |
1-215 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.046 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.324 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 1/16 | Nominal O.D. (inches) N/A 1 5/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 26.6 | Metric O.D. (mm) N/A 33.6 |
1-319 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.037 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.457 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 1 1/16 | Nominal O.D. (inches) N/A 1 7/16 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 26.3 | Metric O.D. (mm) N/A 37.0 |
1-515 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.038 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.390 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 1 1/16 | Nominal O.D. (inches) N/A 1 3/8 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 26.4 | Metric O.D. (mm) N/A 35.3 |
1-024 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.114 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.254 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 1/8 | Nominal O.D. (inches) N/A 1 1/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 28.3 | Metric O.D. (mm) N/A 31.9 |
1-122 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.112 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.318 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1 1/8 | Nominal O.D. (inches) N/A 1 5/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 28.2 | Metric O.D. (mm) N/A 33.5 |
1-216 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.109 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.387 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 1/8 | Nominal O.D. (inches) N/A 1 3/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 28.2 | Metric O.D. (mm) N/A 35.2 |
1-320 | C/S (inches) N/A 0.210 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.100 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.520 | Nominal C/S (inches) N/A 3/16 | Nominal I.D. (inches) N/A 1 1/8 | Nominal O.D. (inches) N/A 1 1/2 | Metric C/S (mm) N/A 5.3 | Metric I.D. (mm) N/A 27.9 | Metric O.D. (mm) N/A 38.6 |
1-516 | C/S (inches) N/A 0.176 | C/S Tolerance (±) N/A 0.005 | I.D. (inches) N/A 1.100 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.452 | Nominal C/S (inches) N/A 5/32 | Nominal I.D. (inches) N/A 1 1/8 | Nominal O.D. (inches) N/A 1 7/16 | Metric C/S (mm) N/A 4.5 | Metric I.D. (mm) N/A 24.9 | Metric O.D. (mm) N/A 36.9 |
1-025 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.176 | I.D. Tolerance (±) N/A 0.011 | O.D. (REF) (inches) N/A 1.316 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 3/16 | Nominal O.D. (inches) N/A 1 5/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 29.9 | Metric O.D. (mm) N/A 33.4 |