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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-212 | 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 |
1-213 | 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 |
1-214 | 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 |
1-215 | 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 |
1-216 | 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 |
1-217 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.171 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.449 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 3/16 | Nominal O.D. (inches) N/A 1 7/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 29.7 | Metric O.D. (mm) N/A 36.8 |
1-218 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.234 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.512 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 1/4 | Nominal O.D. (inches) N/A 1 1/2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 31.3 | Metric O.D. (mm) N/A 38.4 |
1-219 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.296 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.574 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 5/16 | Nominal O.D. (inches) N/A 1 9/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 32.9 | Metric O.D. (mm) N/A 40.0 |
1-220 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.359 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.637 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 3/8 | Nominal O.D. (inches) N/A 1 5/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 34.5 | Metric O.D. (mm) N/A 41.6 |
1-221 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.421 | I.D. Tolerance (±) N/A 0.012 | O.D. (REF) (inches) N/A 1.699 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 7/16 | Nominal O.D. (inches) N/A 1 11/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 36.1 | Metric O.D. (mm) N/A 43.2 |
1-222 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.484 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.762 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 1/2 | Nominal O.D. (inches) N/A 1 3/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 37.7 | Metric O.D. (mm) N/A 44.8 |
1-223 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.609 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 1.887 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 5/8 | Nominal O.D. (inches) N/A 1 7/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 40.9 | Metric O.D. (mm) N/A 47.9 |
1-224 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.734 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.012 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 3/4 | Nominal O.D. (inches) N/A 2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 44.0 | Metric O.D. (mm) N/A 51.1 |
1-225 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.859 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.137 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1 7/8 | Nominal O.D. (inches) N/A 2 1/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 47.2 | Metric O.D. (mm) N/A 54.3 |
1-226 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 1.984 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.262 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 | Nominal O.D. (inches) N/A 2 1/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 50.4 | Metric O.D. (mm) N/A 57.5 |
1-227 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.109 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.387 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 3/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 53.6 | Metric O.D. (mm) N/A 60.6 |
1-228 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.234 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.512 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 1/2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 56.7 | Metric O.D. (mm) N/A 63.8 |
1-229 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.359 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.637 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 3/8 | Nominal O.D. (inches) N/A 2 5/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 59.9 | Metric O.D. (mm) N/A 67.0 |
1-230 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.484 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.762 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 1/2 | Nominal O.D. (inches) N/A 2 3/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 63.1 | Metric O.D. (mm) N/A 70.2 |
1-231 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.609 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 2.887 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 5/8 | Nominal O.D. (inches) N/A 2 7/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 66.3 | Metric O.D. (mm) N/A 73.3 |
1-232 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.734 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.012 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 3/4 | Nominal O.D. (inches) N/A 3 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 69.4 | Metric O.D. (mm) N/A 76.5 |
1-233 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.859 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.137 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 2 7/8 | Nominal O.D. (inches) N/A 3 1/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 72.6 | Metric O.D. (mm) N/A 79.7 |
1-234 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 2.984 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.262 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 3 | Nominal O.D. (inches) N/A 3 1/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 75.8 | Metric O.D. (mm) N/A 82.9 |
1-235 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 3.109 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.387 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 3 1/8 | Nominal O.D. (inches) N/A 3 3/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 79.0 | Metric O.D. (mm) N/A 86.0 |
1-236 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 3.234 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.512 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 3 1/4 | Nominal O.D. (inches) N/A 3 1/2 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 82.1 | Metric O.D. (mm) N/A 89.2 |