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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-169 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 7.487 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 7.693 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 7 1/4 | Nominal O.D. (inches) N/A 7 11/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 190.2 | Metric O.D. (mm) N/A 195.4 |
1-170 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 7.737 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 7.943 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 7 3/4 | Nominal O.D. (inches) N/A 7 15/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 196.5 | Metric O.D. (mm) N/A 201.8 |
1-171 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 7.987 | I.D. Tolerance (±) N/A 0.045 | O.D. (REF) (inches) N/A 8.193 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 8 | Nominal O.D. (inches) N/A 8 3/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 202.9 | Metric O.D. (mm) N/A 208.1 |
1-172 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 8.237 | I.D. Tolerance (±) N/A 0.050 | O.D. (REF) (inches) N/A 8.443 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 8 1/4 | Nominal O.D. (inches) N/A 8 7/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 209.2 | Metric O.D. (mm) N/A 214.5 |
1-173 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 8.487 | I.D. Tolerance (±) N/A 0.050 | O.D. (REF) (inches) N/A 8.693 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 8 1/2 | Nominal O.D. (inches) N/A 8 11/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 215.6 | Metric O.D. (mm) N/A 220.8 |
1-174 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 8.737 | I.D. Tolerance (±) N/A 0.050 | O.D. (REF) (inches) N/A 8.943 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 8 3/4 | Nominal O.D. (inches) N/A 8 15/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 221.9 | Metric O.D. (mm) N/A 227.2 |
1-175 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 8.987 | I.D. Tolerance (±) N/A 0.050 | O.D. (REF) (inches) N/A 9.193 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 9 | Nominal O.D. (inches) N/A 9 3/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 228.3 | Metric O.D. (mm) N/A 233.5 |
1-176 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 9.237 | I.D. Tolerance (±) N/A 0.055 | O.D. (REF) (inches) N/A 9.443 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 9 1/4 | Nominal O.D. (inches) N/A 9 7/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 234.6 | Metric O.D. (mm) N/A 239.9 |
1-177 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 9.487 | I.D. Tolerance (±) N/A 0.055 | O.D. (REF) (inches) N/A 9.693 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 9 1/2 | Nominal O.D. (inches) N/A 9 11/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 241.0 | Metric O.D. (mm) N/A 246.2 |
1-178 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 9.737 | I.D. Tolerance (±) N/A 0.055 | O.D. (REF) (inches) N/A 9.943 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 9 3/4 | Nominal O.D. (inches) N/A 9 15/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 247.3 | Metric O.D. (mm) N/A 252.6 |
1-179 | C/S (inches) N/A 0.103 | C/S Tolerance (±) N/A 0.003 | I.D. (inches) N/A 9.987 | I.D. Tolerance (±) N/A 0.055 | O.D. (REF) (inches) N/A 10.193 | Nominal C/S (inches) N/A 3/32 | Nominal I.D. (inches) N/A 10 | Nominal O.D. (inches) N/A 10 3/16 | Metric C/S (mm) N/A 2.6 | Metric I.D. (mm) N/A 253.7 | Metric O.D. (mm) N/A 258.9 |
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 |
1-202 | 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 |
1-203 | 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 |
1-204 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.359 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.637 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 3/8 | Nominal O.D. (inches) N/A 5/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 9.1 | Metric O.D. (mm) N/A 16.2 |
1-205 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.421 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.699 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 7/16 | Nominal O.D. (inches) N/A 11/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 10.7 | Metric O.D. (mm) N/A 17.8 |
1-206 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.484 | I.D. Tolerance (±) N/A 0.005 | O.D. (REF) (inches) N/A 0.762 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 1/2 | Nominal O.D. (inches) N/A 3/4 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 12.3 | Metric O.D. (mm) N/A 19.4 |
1-207 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.549 | I.D. Tolerance (±) N/A 0.007 | O.D. (REF) (inches) N/A 0.827 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 9/16 | Nominal O.D. (inches) N/A 13/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 13.9 | Metric O.D. (mm) N/A 21.0 |
1-208 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.609 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.887 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 5/8 | Nominal O.D. (inches) N/A 7/8 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 15.5 | Metric O.D. (mm) N/A 22.5 |
1-209 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.672 | I.D. Tolerance (±) N/A 0.009 | O.D. (REF) (inches) N/A 0.950 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 11/16 | Nominal O.D. (inches) N/A 15/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 17.1 | Metric O.D. (mm) N/A 24.1 |
1-210 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.734 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.012 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 3/4 | Nominal O.D. (inches) N/A 1 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 18.6 | Metric O.D. (mm) N/A 25.7 |
1-211 | C/S (inches) N/A 0.139 | C/S Tolerance (±) N/A 0.004 | I.D. (inches) N/A 0.796 | I.D. Tolerance (±) N/A 0.010 | O.D. (REF) (inches) N/A 1.074 | Nominal C/S (inches) N/A 1/8 | Nominal I.D. (inches) N/A 13/16 | Nominal O.D. (inches) N/A 1 1/16 | Metric C/S (mm) N/A 3.5 | Metric I.D. (mm) N/A 20.2 | Metric O.D. (mm) N/A 27.3 |
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 |