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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-001 | C/S (inches) N/A 0.040 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.029 | I.D. Tolerance (±) N/A 0.004 | O.D. (REF) (inches) N/A 0.109 | Nominal C/S (inches) N/A 1/32 | Nominal I.D. (inches) N/A 1/32 | Nominal O.D. (inches) N/A 3/32 | Metric C/S (mm) N/A 1.0 | Metric I.D. (mm) N/A 0.7 | Metric O.D. (mm) N/A 2.8 |
1-002 | C/S (inches) N/A 0.050 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.042 | I.D. Tolerance (±) N/A 0.004 | O.D. (REF) (inches) N/A 0.142 | Nominal C/S (inches) N/A 3/64 | Nominal I.D. (inches) N/A 3/64 | Nominal O.D. (inches) N/A 9/64 | Metric C/S (mm) N/A 1.3 | Metric I.D. (mm) N/A 1.1 | Metric O.D. (mm) N/A 3.6 |
1-102 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.050 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.256 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1/16 | Nominal O.D. (inches) N/A 1/4 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 1.3 | Metric O.D. (mm) N/A 6.5 |
1-003 | C/S (inches) N/A 0.060 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.056 | I.D. Tolerance (±) N/A 0.004 | O.D. (REF) (inches) N/A 0.176 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1/16 | Nominal O.D. (inches) N/A 11/64 | Metric C/S (mm) N/A 1.5 | Metric I.D. (mm) N/A 1.4 | Metric O.D. (mm) N/A 4.5 |
40-70 | C/S (inches) N/A 0.040 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.070 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.150 | Nominal C/S (inches) N/A 1/32 | Nominal I.D. (inches) N/A 5/64 | Nominal O.D. (inches) N/A 9/64 | Metric C/S (mm) N/A 1.0 | Metric I.D. (mm) N/A 1.8 | Metric O.D. (mm) N/A 3.8 |
1-004 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.070 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.210 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5/64 | Nominal O.D. (inches) N/A 13/64 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 1.8 | Metric O.D. (mm) N/A 5.3 |
1-103 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.081 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.287 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 3/32 | Nominal O.D. (inches) N/A 9/32 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 2.1 | Metric O.D. (mm) N/A 7.3 |
1-005 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.101 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.241 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7/64 | Nominal O.D. (inches) N/A 15/64 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 2.6 | Metric O.D. (mm) N/A 6.1 |
1-104 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.112 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.318 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1/8 | Nominal O.D. (inches) N/A 5/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 2.8 | Metric O.D. (mm) N/A 8.1 |
1-006 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.114 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.254 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1/8 | Nominal O.D. (inches) N/A 1/4 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 2.9 | Metric O.D. (mm) N/A 6.5 |
1-105 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.143 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.349 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 5/32 | Nominal O.D. (inches) N/A 11/32 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 3.6 | Metric O.D. (mm) N/A 8.9 |
1-007 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.145 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.285 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5/32 | Nominal O.D. (inches) N/A 9/32 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 3.7 | Metric O.D. (mm) N/A 7.2 |
1-201 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.171 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.449 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 3/16 | Nominal O.D. (inches) N/A 7/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 4.3 | Metric O.D. (mm) N/A 11.4 |
1-106 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.175 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.381 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 3/16 | Nominal O.D. (inches) N/A 3/8 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 4.4 | Metric O.D. (mm) N/A 9.7 |
1-008 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.176 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.316 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 3/16 | Nominal O.D. (inches) N/A 5/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 4.5 | Metric O.D. (mm) N/A 8.0 |
1-901 | C/S (inches) N/A 0.056 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.185 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.297 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 1.4 | Metric I.D. (mm) N/A 4.7 | Metric O.D. (mm) N/A 7.5 |
1-107 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.206 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.412 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 7/32 | Nominal O.D. (inches) N/A 13/32 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 5.2 | Metric O.D. (mm) N/A 10.5 |
1-009 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.208 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.348 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 7/32 | Nominal O.D. (inches) N/A 11/32 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 5.3 | Metric O.D. (mm) N/A 8.8 |
1-202 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.234 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.512 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1/4 | Nominal O.D. (inches) N/A 1/2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 5.9 | Metric O.D. (mm) N/A 13.0 |
1-108 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.237 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.443 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 1/4 | Nominal O.D. (inches) N/A 7/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 6.0 | Metric O.D. (mm) N/A 11.3 |
1-010 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.239 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.379 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 1/4 | Nominal O.D. (inches) N/A 3/8 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 6.1 | Metric O.D. (mm) N/A 9.6 |
1-902 | C/S (inches) N/A 0.064 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.239 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.367 | Nominal C/S (inches) N/A | Nominal I.D. (inches) N/A | Nominal O.D. (inches) N/A | Metric C/S (mm) N/A 1.6 | Metric I.D. (mm) N/A 6.1 | Metric O.D. (mm) N/A 9.3 |
1-011 | C/S (inches) N/A 0.070 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.301 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.441 | Nominal C/S (inches) N/A 1/16 | Nominal I.D. (inches) N/A 5/16 | Nominal O.D. (inches) N/A 7/16 | Metric C/S (mm) N/A 1.8 | Metric I.D. (mm) N/A 7.6 | Metric O.D. (mm) N/A 11.2 |
1-109 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 0.299 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.505 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 5/16 | Nominal O.D. (inches) N/A 1/2 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 7.6 | Metric O.D. (mm) N/A 12.8 |
1-203 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A .296 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.579 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 5/16 | Nominal O.D. (inches) N/A 9/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 7.6 | Metric O.D. (mm) N/A 14.7 |