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.

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	N/A 0.040	N/A 0.003	N/A 0.029	N/A 0.004	N/A 0.109	N/A 1/32	N/A 1/32	N/A 3/32	N/A 1.0	N/A 0.7	N/A 2.8
40-70	N/A 0.040	N/A 0.003	N/A 0.070	N/A 0.005	N/A 0.150	N/A 1/32	N/A 5/64	N/A 9/64	N/A 1.0	N/A 1.8	N/A 3.8
1-002	N/A 0.050	N/A 0.003	N/A 0.042	N/A 0.004	N/A 0.142	N/A 3/64	N/A 3/64	N/A 9/64	N/A 1.3	N/A 1.1	N/A 3.6
1-003	N/A 0.060	N/A 0.003	N/A 0.056	N/A 0.004	N/A 0.176	N/A 1/16	N/A 1/16	N/A 11/64	N/A 1.5	N/A 1.4	N/A 4.5
1-004	N/A 0.070	N/A 0.003	N/A 0.070	N/A 0.005	N/A 0.210	N/A 1/16	N/A 5/64	N/A 13/64	N/A 1.8	N/A 1.8	N/A 5.3
1-005	N/A 0.070	N/A 0.003	N/A 0.101	N/A 0.005	N/A 0.241	N/A 1/16	N/A 7/64	N/A 15/64	N/A 1.8	N/A 2.6	N/A 6.1
1-006	N/A 0.070	N/A 0.003	N/A 0.114	N/A 0.005	N/A 0.254	N/A 1/16	N/A 1/8	N/A 1/4	N/A 1.8	N/A 2.9	N/A 6.5
1-007	N/A 0.070	N/A 0.003	N/A 0.145	N/A 0.005	N/A 0.285	N/A 1/16	N/A 5/32	N/A 9/32	N/A 1.8	N/A 3.7	N/A 7.2
1-008	N/A 0.070	N/A 0.003	N/A 0.176	N/A 0.005	N/A 0.316	N/A 1/16	N/A 3/16	N/A 5/16	N/A 1.8	N/A 4.5	N/A 8.0
1-009	N/A 0.070	N/A 0.003	N/A 0.208	N/A 0.005	N/A 0.348	N/A 1/16	N/A 7/32	N/A 11/32	N/A 1.8	N/A 5.3	N/A 8.8
1-010	N/A 0.070	N/A 0.003	N/A 0.239	N/A 0.005	N/A 0.379	N/A 1/16	N/A 1/4	N/A 3/8	N/A 1.8	N/A 6.1	N/A 9.6
1-011	N/A 0.070	N/A 0.003	N/A 0.301	N/A 0.005	N/A 0.441	N/A 1/16	N/A 5/16	N/A 7/16	N/A 1.8	N/A 7.6	N/A 11.2
1-012	N/A 0.070	N/A 0.003	N/A 0.364	N/A 0.005	N/A 0.504	N/A 1/16	N/A 3/8	N/A 1/2	N/A 1.8	N/A 9.2	N/A 12.8
1-013	N/A 0.070	N/A 0.003	N/A 0.426	N/A 0.005	N/A 0.566	N/A 1/16	N/A 7/16	N/A 9/16	N/A 1.8	N/A 10.8	N/A 14.4
1-014	N/A 0.070	N/A 0.003	N/A 0.489	N/A 0.005	N/A 0.629	N/A 1/16	N/A 1/2	N/A 5/8	N/A 1.8	N/A 12.4	N/A 16.0
1-015	N/A 0.070	N/A 0.003	N/A 0.551	N/A 0.007	N/A 0.691	N/A 1/16	N/A 9/16	N/A 11/16	N/A 1.8	N/A 14.0	N/A 17.6
1-016	N/A 0.070	N/A 0.003	N/A 0.614	N/A 0.009	N/A 0.754	N/A 1/16	N/A 5/8	N/A 3/4	N/A 1.8	N/A 15.6	N/A 19.2
1-017	N/A 0.070	N/A 0.003	N/A 0.676	N/A 0.009	N/A 0.816	N/A 1/16	N/A 11/16	N/A 13/16	N/A 1.8	N/A 17.2	N/A 20.7
1-018	N/A 0.070	N/A 0.003	N/A 0.739	N/A 0.009	N/A 0.879	N/A 1/16	N/A 3/4	N/A 7/8	N/A 1.8	N/A 18.8	N/A 22.3
1-019	N/A 0.070	N/A 0.003	N/A 0.801	N/A 0.009	N/A 0.941	N/A 1/16	N/A 13/16	N/A 15/16	N/A 1.8	N/A 20.3	N/A 23.9
1-020	N/A 0.070	N/A 0.003	N/A 0.864	N/A 0.009	N/A 1.004	N/A 1/16	N/A 7/8	N/A 1	N/A 1.8	N/A 21.9	N/A 25.5
1-021	N/A 0.070	N/A 0.003	N/A 0.926	N/A 0.009	N/A 1.066	N/A 1/16	N/A 15/16	N/A 1 1/16	N/A 1.8	N/A 23.5	N/A 27.1
1-022	N/A 0.070	N/A 0.003	N/A 0.989	N/A 0.010	N/A 1.129	N/A 1/16	N/A 1	N/A 1 1/8	N/A 1.8	N/A 25.1	N/A 28.7
1-023	N/A 0.070	N/A 0.003	N/A 1.051	N/A 0.010	N/A 1.191	N/A 1/16	N/A 1 1/16	N/A 1 3/16	N/A 1.8	N/A 26.7	N/A 30.3
1-024	N/A 0.070	N/A 0.003	N/A 1.114	N/A 0.010	N/A 1.254	N/A 1/16	N/A 1 1/8	N/A 1 1/4	N/A 1.8	N/A 28.3	N/A 31.9

1-001

N/A 0.040

N/A 0.003

N/A 0.029

N/A 0.004

N/A 0.109

N/A 1/32

N/A 3/32

N/A 1.0

N/A 0.7

N/A 2.8

40-70

N/A 0.040

N/A 0.003

N/A 0.070

N/A 0.005

N/A 0.150

N/A 1/32

N/A 5/64

N/A 9/64

N/A 1.0

N/A 1.8

N/A 3.8

1-002

N/A 0.050

N/A 0.003

N/A 0.042

N/A 0.004

N/A 0.142

N/A 3/64

N/A 9/64

N/A 1.3

N/A 1.1

N/A 3.6

1-003

N/A 0.060

N/A 0.003

N/A 0.056

N/A 0.004

N/A 0.176

N/A 1/16

N/A 11/64

N/A 1.5

N/A 1.4

N/A 4.5

1-004

N/A 0.070

N/A 0.003

N/A 0.070

N/A 0.005

N/A 0.210

N/A 1/16

N/A 5/64

N/A 13/64

N/A 1.8

N/A 5.3

1-005

N/A 0.070

N/A 0.003

N/A 0.101

N/A 0.005

N/A 0.241

N/A 1/16

N/A 7/64

N/A 15/64

N/A 1.8

N/A 2.6

N/A 6.1

1-006

N/A 0.070

N/A 0.003

N/A 0.114

N/A 0.005

N/A 0.254

N/A 1/16

N/A 1/8

N/A 1/4

N/A 1.8

N/A 2.9

N/A 6.5

1-007

N/A 0.070

N/A 0.003

N/A 0.145

N/A 0.005

N/A 0.285

N/A 1/16

N/A 5/32

N/A 9/32

N/A 1.8

N/A 3.7

N/A 7.2

1-008

N/A 0.070

N/A 0.003

N/A 0.176

N/A 0.005

N/A 0.316

N/A 1/16

N/A 3/16

N/A 5/16

N/A 1.8

N/A 4.5

N/A 8.0

1-009

N/A 0.070

N/A 0.003

N/A 0.208

N/A 0.005

N/A 0.348

N/A 1/16

N/A 7/32

N/A 11/32

N/A 1.8

N/A 5.3

N/A 8.8

1-010

N/A 0.070

N/A 0.003

N/A 0.239

N/A 0.005

N/A 0.379

N/A 1/16

N/A 1/4

N/A 3/8

N/A 1.8

N/A 6.1

N/A 9.6

1-011

N/A 0.070

N/A 0.003

N/A 0.301

N/A 0.005

N/A 0.441

N/A 1/16

N/A 5/16

N/A 7/16

N/A 1.8

N/A 7.6

N/A 11.2

1-012

N/A 0.070

N/A 0.003

N/A 0.364

N/A 0.005

N/A 0.504

N/A 1/16

N/A 3/8

N/A 1/2

N/A 1.8

N/A 9.2

N/A 12.8

1-013

N/A 0.070

N/A 0.003

N/A 0.426

N/A 0.005

N/A 0.566

N/A 1/16

N/A 7/16

N/A 9/16

N/A 1.8

N/A 10.8

N/A 14.4

1-014

N/A 0.070

N/A 0.003

N/A 0.489

N/A 0.005

N/A 0.629

N/A 1/16

N/A 1/2

N/A 5/8

N/A 1.8

N/A 12.4

N/A 16.0

1-015

N/A 0.070

N/A 0.003

N/A 0.551

N/A 0.007

N/A 0.691

N/A 1/16

N/A 9/16

N/A 11/16

N/A 1.8

N/A 14.0

N/A 17.6

1-016

N/A 0.070

N/A 0.003

N/A 0.614

N/A 0.009

N/A 0.754

N/A 1/16

N/A 5/8

N/A 3/4

N/A 1.8

N/A 15.6

N/A 19.2

1-017

N/A 0.070

N/A 0.003

N/A 0.676

N/A 0.009

N/A 0.816

N/A 1/16

N/A 11/16

N/A 13/16

N/A 1.8

N/A 17.2

N/A 20.7

1-018

N/A 0.070

N/A 0.003

N/A 0.739

N/A 0.009

N/A 0.879

N/A 1/16

N/A 3/4

N/A 7/8

N/A 1.8

N/A 18.8

N/A 22.3

1-019

N/A 0.070

N/A 0.003

N/A 0.801

N/A 0.009

N/A 0.941

N/A 1/16

N/A 13/16

N/A 15/16

N/A 1.8

N/A 20.3

N/A 23.9

1-020

N/A 0.070

N/A 0.003

N/A 0.864

N/A 0.009

N/A 1.004

N/A 1/16

N/A 7/8

N/A 1

N/A 1.8

N/A 21.9

N/A 25.5

1-021

N/A 0.070

N/A 0.003

N/A 0.926

N/A 0.009

N/A 1.066

N/A 1/16

N/A 15/16

N/A 1 1/16

N/A 1.8

N/A 23.5

N/A 27.1

1-022

N/A 0.070

N/A 0.003

N/A 0.989

N/A 0.010

N/A 1.129

N/A 1/16

N/A 1

N/A 1 1/8

N/A 1.8

N/A 25.1

N/A 28.7

1-023

N/A 0.070

N/A 0.003

N/A 1.051

N/A 0.010

N/A 1.191

N/A 1/16

N/A 1 1/16

N/A 1 3/16

N/A 1.8

N/A 26.7

N/A 30.3

1-024

N/A 0.070

N/A 0.003

N/A 1.114

N/A 0.010

N/A 1.254

N/A 1/16

N/A 1 1/8

N/A 1 1/4

N/A 1.8

N/A 28.3

N/A 31.9