AS 568 O-Rings from PAI

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.

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Nominal C/S (inches)

Nominal I.D. (inches)

Nominal O.D. (inches)

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)

1-384	N/A 0.210	N/A 0.005	N/A 14.975	N/A 0.070	N/A 15.395	N/A 3/16	N/A 15	N/A 15 3/8	N/A 5.3	N/A 380.4	N/A 391.0
1-383	N/A 0.210	N/A 0.005	N/A 13.975	N/A 0.070	N/A 14.395	N/A 3/16	N/A 14	N/A 14 3/8	N/A 5.3	N/A 355.0	N/A 365.6
1-382	N/A 0.210	N/A 0.005	N/A 12.975	N/A 0.065	N/A 13.395	N/A 3/16	N/A 13	N/A 13 3/8	N/A 5.3	N/A 329.6	N/A 340.2
1-381	N/A 0.210	N/A 0.005	N/A 11.975	N/A 0.065	N/A 12.395	N/A 3/16	N/A 12	N/A 12 3/8	N/A 5.3	N/A 304.2	N/A 314.8
1-380	N/A 0.210	N/A 0.005	N/A 11.475	N/A 0.065	N/A 11.895	N/A 3/16	N/A 11 1/2	N/A 11 7/8	N/A 5.3	N/A 291.5	N/A 302.1
1-379	N/A 0.210	N/A 0.005	N/A 10.975	N/A 0.060	N/A 11.395	N/A 3/16	N/A 11	N/A 11 3/8	N/A 5.3	N/A 278.8	N/A 289.4
1-378	N/A 0.210	N/A 0.005	N/A 10.475	N/A 0.060	N/A 10.895	N/A 3/16	N/A 10 1/2	N/A 10 7/8	N/A 5.3	N/A 266.1	N/A 276.7
1-377	N/A 0.210	N/A 0.005	N/A 9.975	N/A 0.055	N/A 10.395	N/A 3/16	N/A 10	N/A 10 3/8	N/A 5.3	N/A 253.4	N/A 264.0
1-376	N/A 0.210	N/A 0.005	N/A 9.725	N/A 0.055	N/A 10.145	N/A 3/16	N/A 9 3/4	N/A 10 1/8	N/A 5.3	N/A 247.0	N/A 257.7
1-375	N/A 0.210	N/A 0.005	N/A 9.475	N/A 0.055	N/A 9.895	N/A 3/16	N/A 9 1/2	N/A 9 7/8	N/A 5.3	N/A 240.7	N/A 251.3
1-374	N/A 0.210	N/A 0.005	N/A 9.225	N/A 0.055	N/A 9.645	N/A 3/16	N/A 9 1/4	N/A 9 5/8	N/A 5.3	N/A 234.3	N/A 245.0
1-373	N/A 0.210	N/A 0.005	N/A 8.975	N/A 0.050	N/A 9.395	N/A 3/16	N/A 9	N/A 9 3/8	N/A 5.3	N/A 228.0	N/A 238.6
1-372	N/A 0.210	N/A 0.005	N/A 8.725	N/A 0.050	N/A 9.145	N/A 3/16	N/A 8 3/4	N/A 9 1/8	N/A 5.3	N/A 221.6	N/A 232.3
1-371	N/A 0.210	N/A 0.005	N/A 8.475	N/A 0.050	N/A 8.895	N/A 3/16	N/A 8 1/2	N/A 8 7/8	N/A 5.3	N/A 215.3	N/A 225.9
1-370	N/A 0.210	N/A 0.005	N/A 8.225	N/A 0.050	N/A 8.645	N/A 3/16	N/A 8 1/4	N/A 8 5/8	N/A 5.3	N/A 208.9	N/A 219.6
1-369	N/A 0.210	N/A 0.005	N/A 7.975	N/A 0.045	N/A 8.395	N/A 3/16	N/A 8	N/A 8 3/8	N/A 5.3	N/A 202.6	N/A 213.2
1-368	N/A 0.210	N/A 0.005	N/A 7.725	N/A 0.045	N/A 8.145	N/A 3/16	N/A 7 3/4	N/A 8 1/8	N/A 5.3	N/A 196.2	N/A 206.9
1-367	N/A 0.210	N/A 0.005	N/A 7.475	N/A 0.045	N/A 7.895	N/A 3/16	N/A 7 1/4	N/A 7 7/8	N/A 5.3	N/A 189.9	N/A 200.5
1-366	N/A 0.210	N/A 0.005	N/A 7.225	N/A 0.045	N/A 7.645	N/A 3/16	N/A 7 1/2	N/A 7 5/8	N/A 5.3	N/A 183.5	N/A 194.2
1-365	N/A 0.210	N/A 0.005	N/A 6.975	N/A 0.040	N/A 7.395	N/A 3/16	N/A 7	N/A 7 3/8	N/A 5.3	N/A 177.2	N/A 187.8
1-364	N/A 0.210	N/A 0.005	N/A 6.725	N/A 0.040	N/A 7.145	N/A 3/16	N/A 6 3/4	N/A 7 1/8	N/A 5.3	N/A 170.8	N/A 181.5
1-363	N/A 0.210	N/A 0.005	N/A 6.475	N/A 0.040	N/A 6.895	N/A 3/16	N/A 6 1/2	N/A 6 7/8	N/A 5.3	N/A 164.5	N/A 175.1
1-362	N/A 0.210	N/A 0.005	N/A 6.225	N/A 0.040	N/A 6.645	N/A 3/16	N/A 6 1/4	N/A 6 5/8	N/A 5.3	N/A 158.1	N/A 168.8
1-361	N/A 0.210	N/A 0.005	N/A 5.975	N/A 0.037	N/A 6.395	N/A 3/16	N/A 6	N/A 6 3/8	N/A 5.3	N/A 151.8	N/A 162.4
1-360	N/A 0.210	N/A 0.005	N/A 5.850	N/A 0.037	N/A 6.270	N/A 3/16	N/A 5 7/8	N/A 6 1/4	N/A 5.3	N/A 148.6	N/A 159.3

126 - 150 of 448 | Results Per Page | View | Unit of Measure

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No Preference
1/32
3/64
1/16
5/64
3/32
7/64
1/8
5/32
3/16
7/32
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1 1/16
1 1/8
1 3/16
1 1/4
1 5/16
1 3/8
1 7/16
1 1/2
1 9/16
1 5/8
1 11/16
1 3/4
1 13/16
1 7/8
1 15/16
2
2 1/16
2 1/8
2 3/16
2 1/4
2 5/16
2 3/8
2 7/16
2 1/2
2 9/16
2 5/8
2 11/16
2 3/4
2 13/16
2 7/8
3
3 1/8
3 1/4
3 3/8
3 1/2
3 5/8
3 3/4
3 7/8
4
4 1/8
4 1/4
4 3/8
4 5/8
4 3/4
4 7/8
4.5
5
5 1/8
5 1/4
5 3/8
5 1/2
5 5/8
5 3/4
5 7/8
6
6 1/4
6 1/2
6 3/4
7
7 1/4
7 1/2
7 3/4
8
8 1/4
8 1/2
8 3/4
9
9 1/4
9 1/2
9 3/4
10
10 1/2
11
11 1/2
12
12 1/2
13
13 1/2
14
14 1/2
15
15 1/2
16
16 1/2
17
17 1/2
18
18 1/2
19
19 1/2
20
21
22
23
24
25
26
27

No Preference
3/32
9/64
11/64
13/64
15/64
1/4
9/32
5/16
11/32
3/8
13/32
7/16
1/2
9/16
5/8
11/16
3/4
13/16
7/8
15/16
1
1 1/16
1 1/8
1 3/16
1 1/4
1 5/16
1 3/8
1 7/16
1 1/2
1 9/16
1 5/8
1 11/16
1 3/4
1 13/16
1 7/8
1 15/16
2
2 1/16
2 1/8
2 3/16
2 1/4
2 5/16
2 3/8
2 7/16
2 1/2
2 9/16
2 5/8
2 11/16
2 3/4
2 13/16
2 7/8
2 15/16
3
3 1/16
3 1/8
3 3/16
3 1/4
3 5/16
3 3/8
3 7/16
3 1/2
3 9/16
3 5/8
3 11/16
3 3/4
3 13/16
3 7/8
3 15/16
4
4 1/16
4 1/8
4 3/16
4 1/4
4 5/16
4 3/8
4 7/16
4 1/2
4 9/16
4 5/8
4 11/16
4 3/4
4 13/16
4 7/8
4 15/16
5
5 1/16
5 1/8
5 3/16
5 1/4
5 3/8
5 7/16
5 1/2
5 5/8
5 11/16
5 3/4
5 7/8
5 15/16
6
6 1/8
6 3/16
6 1/4
6 3/8
6 7/16
6 1/2
6 5/8
6 11/16
6 3/4
6 7/8
6 15/16
7
7 1/8
7 3/16
7 1/4
7 3/8
7 7/16
7 1/2
7 5/8
7 11/16
7 3/4
7 7/8
7 15/16
8
8 1/8
8 3/16
8 1/4
8 3/8
8 7/16
8 1/2
8 5/8
8 11/16
8 3/4
8 7/8
8 15/16
9
9 1/8
9 3/16
9 1/4
9 3/8
9 7/16
9 1/2
9 5/8
9 11/16
9 3/4
9 7/8
9 15/16
10
10 1/8
10 3/16
10 1/4
10 3/8
10 1/2
10 3/4
10 7/8
11
11 1/4
11 3/8
11 1/2
11 3/4
11 7/8
12
12 1/4
12 3/8
12 1/2
13
13 1/4
13 3/8
13 1/2
14
14 1/4
14 3/8
14 1/2
15
15 1/4
15 3/8
15 1/2
16
16 1/4
16 3/8
16 1/2
17
17 1/4
17 3/8
17 1/2
18
18 1/4
18 3/8
18 1/2
19
19 3/8
19 1/2
20
20 1/4
20 3/8
20 1/2
21 3/8
21 1/2
22 3/8
22 1/2
23 3/8
23 1/2
24 3/8
24 1/2
25 3/8
25 1/2
26 3/8
26 1/2
27 3/8
27 1/2