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) |
---|---|---|---|---|---|---|---|---|---|---|---|
1-426 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 4.600 | I.D. Tolerance (±) N/A 0.033 | O.D. (REF) (inches) N/A 5.150 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 4 5/8 | Nominal O.D. (inches) N/A 5 1/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 116.8 | Metric O.D. (mm) N/A 130.8 |
1-425 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 4.475 | I.D. Tolerance (±) N/A 0.033 | O.D. (REF) (inches) N/A 5.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 4.5 | Nominal O.D. (inches) N/A 5 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 113.7 | Metric O.D. (mm) N/A 127.6 |
1-424 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 4.350 | I.D. Tolerance (±) N/A 0.030 | O.D. (REF) (inches) N/A 4.900 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 4 3/8 | Nominal O.D. (inches) N/A 4 7/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 110.5 | Metric O.D. (mm) N/A 124.5 |
1-423 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 4.225 | I.D. Tolerance (±) N/A 0.030 | O.D. (REF) (inches) N/A 4.775 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 4 1/4 | Nominal O.D. (inches) N/A 4 3/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 107.3 | Metric O.D. (mm) N/A 121.3 |
1-422 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 4.100 | I.D. Tolerance (±) N/A 0.028 | O.D. (REF) (inches) N/A 4.650 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 4 1/8 | Nominal O.D. (inches) N/A 4 5/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 104.1 | Metric O.D. (mm) N/A 118.1 |
1-421 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 3.975 | I.D. Tolerance (±) N/A 0.028 | O.D. (REF) (inches) N/A 4.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 4 | Nominal O.D. (inches) N/A 4 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 101.0 | Metric O.D. (mm) N/A 114.9 |
1-420 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 3.850 | I.D. Tolerance (±) N/A 0.028 | O.D. (REF) (inches) N/A 4.400 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 3 7/8 | Nominal O.D. (inches) N/A 4 3/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 97.8 | Metric O.D. (mm) N/A 111.8 |
1-419 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 3.725 | I.D. Tolerance (±) N/A 0.028 | O.D. (REF) (inches) N/A 4.275 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 3 3/4 | Nominal O.D. (inches) N/A 4 1/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 94.6 | Metric O.D. (mm) N/A 108.6 |
1-418 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 3.600 | I.D. Tolerance (±) N/A 0.028 | O.D. (REF) (inches) N/A 4.150 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 3 5/8 | Nominal O.D. (inches) N/A 4 1/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 91.4 | Metric O.D. (mm) N/A 105.4 |
1-417 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 3.475 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 4.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 3 1/2 | Nominal O.D. (inches) N/A 4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 88.3 | Metric O.D. (mm) N/A 102.2 |
1-416 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 3.350 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.900 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 3 3/8 | Nominal O.D. (inches) N/A 3 7/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 85.1 | Metric O.D. (mm) N/A 99.1 |
1-415 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 3.225 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.775 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 3 1/4 | Nominal O.D. (inches) N/A 3 3/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 81.9 | Metric O.D. (mm) N/A 95.9 |
1-414 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 3.100 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.650 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 3 1/8 | Nominal O.D. (inches) N/A 3 5/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 78.7 | Metric O.D. (mm) N/A 92.7 |
1-413 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.975 | I.D. Tolerance (±) N/A 0.024 | O.D. (REF) (inches) N/A 3.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 3 | Nominal O.D. (inches) N/A 3 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 75.6 | Metric O.D. (mm) N/A 89.5 |
1-412 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.850 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 3.400 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 7/8 | Nominal O.D. (inches) N/A 3 3/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 72.4 | Metric O.D. (mm) N/A 86.4 |
1-411 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.725 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 3.275 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 3/4 | Nominal O.D. (inches) N/A 3 1/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 69.2 | Metric O.D. (mm) N/A 83.2 |
1-410 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.600 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 3.150 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 5/8 | Nominal O.D. (inches) N/A 3 1/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 66.0 | Metric O.D. (mm) N/A 80.0 |
1-409 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.475 | I.D. Tolerance (±) N/A 0.020 | O.D. (REF) (inches) N/A 3.025 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 1/2 | Nominal O.D. (inches) N/A 3 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 62.9 | Metric O.D. (mm) N/A 76.8 |
1-408 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.350 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.900 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 3/8 | Nominal O.D. (inches) N/A 2 7/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 59.7 | Metric O.D. (mm) N/A 73.7 |
1-407 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.225 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.775 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 1/4 | Nominal O.D. (inches) N/A 2 3/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 56.5 | Metric O.D. (mm) N/A 70.5 |
1-406 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 2.100 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.650 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 1/8 | Nominal O.D. (inches) N/A 2 5/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 53.3 | Metric O.D. (mm) N/A 67.3 |
1-405 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 1.975 | I.D. Tolerance (±) N/A 0.018 | O.D. (REF) (inches) N/A 2.525 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 2 | Nominal O.D. (inches) N/A 2 1/2 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 50.2 | Metric O.D. (mm) N/A 64.1 |
1-404 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 1.850 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.400 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 1 7/8 | Nominal O.D. (inches) N/A 2 3/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 47.0 | Metric O.D. (mm) N/A 61.0 |
1-403 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 1.725 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.275 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 1 3/4 | Nominal O.D. (inches) N/A 2 1/4 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 43.8 | Metric O.D. (mm) N/A 57.8 |
1-402 | C/S (inches) N/A 0.275 | C/S Tolerance (±) N/A 0.006 | I.D. (inches) N/A 1.600 | I.D. Tolerance (±) N/A 0.015 | O.D. (REF) (inches) N/A 2.150 | Nominal C/S (inches) N/A 1/4 | Nominal I.D. (inches) N/A 1 5/8 | Nominal O.D. (inches) N/A 2 1/8 | Metric C/S (mm) N/A 7.0 | Metric I.D. (mm) N/A 40.6 | Metric O.D. (mm) N/A 54.6 |