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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-022 | 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 |
1-023 | 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 |
1-024 | 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 |
1-025 | 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 |
1-026 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.239 | I.D. Tolerance (±) N/A 0.011 | O.D. (REF) (inches) N/A 1.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 1/4 | Nominal O.D. (inches) N/A 1 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 31.5 | Metric O.D. (mm) N/A 35.0 |
1-027 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.301 | I.D. Tolerance (±) N/A 0.011 | O.D. (REF) (inches) N/A 1.441 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 5/16 | Nominal O.D. (inches) N/A 1 7/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 33.0 | Metric O.D. (mm) N/A 36.6 |
1-028 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.364 | I.D. Tolerance (±) N/A 0.013 | O.D. (REF) (inches) N/A 1.504 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 3/8 | Nominal O.D. (inches) N/A 1 1/2 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 34.6 | Metric O.D. (mm) N/A 38.2 |
1-029 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.489 | I.D. Tolerance (±) N/A 0.013 | O.D. (REF) (inches) N/A 1.629 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 1/2 | Nominal O.D. (inches) N/A 1 5/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 37.8 | Metric O.D. (mm) N/A 41.4 |
1-030 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 1.614 | I.D. Tolerance (±) N/A 0.013 | O.D. (REF) (inches) N/A 1.754 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1 5/8 | Nominal O.D. (inches) N/A 1 3/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 41.0 | Metric O.D. (mm) N/A 44.6 |
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 |
1-032 | 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 |
1-033 | 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 |
1-034 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.114 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.254 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 1/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 53.7 | Metric O.D. (mm) N/A 57.3 |
1-035 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.239 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 56.9 | Metric O.D. (mm) N/A 60.4 |
1-036 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.364 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.504 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 3/8 | Nominal O.D. (inches) N/A 2 1/2 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 60.0 | Metric O.D. (mm) N/A 63.6 |
1-037 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.489 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.629 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 1/2 | Nominal O.D. (inches) N/A 2 5/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 63.2 | Metric O.D. (mm) N/A 66.8 |
1-038 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.614 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.754 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 5/8 | Nominal O.D. (inches) N/A 2 3/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 66.4 | Metric O.D. (mm) N/A 70.0 |
1-039 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.739 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.879 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 3/4 | Nominal O.D. (inches) N/A 2 7/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 69.6 | Metric O.D. (mm) N/A 73.1 |
1-040 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.864 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 3.004 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 2 7/8 | Nominal O.D. (inches) N/A 3 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 72.7 | Metric O.D. (mm) N/A 76.3 |
1-041 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 2.989 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.129 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 3 | Nominal O.D. (inches) N/A 3 1/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 75.9 | Metric O.D. (mm) N/A 79.5 |
1-042 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 3.239 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 3 1/4 | Nominal O.D. (inches) N/A 3 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 82.3 | Metric O.D. (mm) N/A 85.8 |
1-043 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 3.489 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.629 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 3 1/2 | Nominal O.D. (inches) N/A 3 5/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 88.6 | Metric O.D. (mm) N/A 92.2 |
1-044 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 3.739 | I.D. Tolerance (±) N/A 0.027 | O.D. (REF) (inches) N/A 3.879 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 3 3/4 | Nominal O.D. (inches) N/A 3 7/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 95.0 | Metric O.D. (mm) N/A 98.5 |
1-045 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 3.989 | I.D. Tolerance (±) N/A 0.027 | O.D. (REF) (inches) N/A 4.129 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 4 | Nominal O.D. (inches) N/A 4 1/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 101.3 | Metric O.D. (mm) N/A 104.9 |
1-046 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 4.239 | I.D. Tolerance (±) N/A 0.030 | O.D. (REF) (inches) N/A 4.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 4 1/4 | Nominal O.D. (inches) N/A 4 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 107.7 | Metric O.D. (mm) N/A 111.2 |