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Standard O Rings
Fabric Reinforced Vee Packings are recommended for liquid and gas service on all heavy-duty equipment where operating pressures and clearances exceed the recommended pressures for the homogeneous packings. They are used in hydraulic cylinder and pump applications and are available in a number of compositions covering an exceptionally wide range of operating conditions. Fabric Reinforced Vee Packings are usually constructed of cotton duck or asbestos cloth, coated with various elastomers and molded under heat and pressure.
 

Standard O-Ring Sizing Chart

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AS568A-
Dash #
Actual
I.D.
Inches
Actual
C.S.
Inches
Actual
I.D.
Millimeters
Actual
C.S.
Millimeters
Nominal
Reference
I.D.
Nominal
Reference
C.S.
Nominal
Reference
O.D.

-001

-002

-003

-004

-005

-006

-007

-008

-009

-010

-011

-012

-013

-014

-015

-016

-017

-018

-019

-020

-021

-022

-023

-024

-025

-026

-027

-028

-029

-030

-031

-032

-033

-034

-035

-036

-037

-038

-039

-040

-041

-042

-043

-044

-045

-046

-047

-048

-049

-050

.029±.004

.042±.004

.056±.004

.070±.005

.101±.005

.114±.005

.145±.005

.176±.005

.208±.005

.239±.005

.301±.005

.364±.005

.426±.005

.489±.005

.551±.007

.614±.009

.676±.009

.739±.009

.801±.009

.864±.009

.926±.009

.989±.010

1.051±.010

1.114±.010

1.176±.011

1.239±.011

1.301±.011

1.364±.013

1.489±.013

1.614±.013

1.739±.015

1.864±.015

1.989±.018

2.114±.018

2.239±.018

2.364±.018

2.489±.018

2.614±.020

2.739±.020

2.864±.020

2.989±.024

3.239±.024

3.489±.024

3.739±.027

3.989±.027

4.239±.030

4.489±.030

4.739±.030

4.989±.037

5.239±.037

.040±.003

.050±.003

.060±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

.070±.003

0.74±0.10

1.07±0.10

1.42±0.10

1.78±0.13

2.57±0.13

2.90±0.13

3.68±0.13

4.47±0.13

5.28±0.13

6.07±0.13

7.65±0.13

9.25±0.13

10.82±0.13

12.42±0.13

14.00±0.18

15.60±0.23

17.17±0.23

18.77±0.23

20.35±0.23

21.95±0.23

23.52±0.23

25.12±0.25

26.70±0.25

28.30±0.25

29.87±0.28

31.47±0.28

33.05±0.28

34.65±0.33

37.82±0.33

41.00±0.33

44.17±0.38

47.35±0.38

50.52±0.46

53.70±0.46

56.87±0.46

60.05±0.46

63.22±0.46

66.40±0.51

69.57±0.51

72.75±0.51

75.92±0.61

82.27±0.61

88.62±0.61

94.97±0.69

101.32±0.69

107.67±0.76

114.02±0.76

120.37±0.76

126.72±0.94

133.07±0.94

1.02±0.08

1.27±0.08

1.52±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1.78±0.08

1/32

3/64

1/16

5/64

3/32

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

1-1/2

1-5/8

1-3/4

1-7/8

2

2-1/8

2-1/4

2-3/8

2-1/2

2-5/8

2-3/4

2-7/8

3

3-1/4

3-1/2

3-3/4

4

4-1/4

4-1/2

4-3/4

5

5-1/4

1/32

3/64

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

1/16

3/32

9/64

3/16

13/64

7/32

1/4

9/32

5/16

11/32

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

1-5/8

1-3/4

1-7/8

2

2-1/8

2-1/4

2-3/8

2-1/2

2-5/8

2-3/4

2-7/8

3

3-1/8

3-3/8

3-5/8

3-7/8

4-1/8

4-3/8

4-5/8

4-7/8

5-1/8

5-3/8
AS568A-
Dash #
Actual
I.D.
Inches
Actual
C.S.
Inches
Actual
I.D.
Millimeters
Actual
C.S.
Millimeters
Nominal
Reference
I.D.
Nominal
Reference
C.S.
Nominal
Reference
O.D.

-102

-103

-104

-105

-106

-107

-108

-109

-110

-111

-112

-113

-114

-115

-116

-117

-118

-119

-120

-121

-122

-123

-124

-125

-126

-127

-128

-129

-130

-131

-132

-133

-134

-135

-136

-137

-138

-139

-140

-141

-142

-143

-144

-145

-146

-147

-148

-149

-150

-151

-152

-153

-154

-155

-156

-157

-158

-159

-160

-161

-162

-163

-164

-165

-166

-167

-168

-169

-170

-171

-172

-173

-174

-175

-176

-177

-178

.049±.005

.081±.005

.112±.005

.143±.005

.174±.005

.206±.005

.237±.005

.299±.005

.362±.005

.424±.005

.487±.005

.549±.007

.612±.009

.674±.009

.737±.009

.799±.010

.862±.010

.924±.010

.987±.010

1.049±.010

1.112±.010

1.174±.012

1.237±.012

1.299±.012

1.362±.012

1.424±.012

1.487±.012

1.549±.015

1.612±.015

1.674±.015

1.737±.015

1.799±.015

1.862±.015

1.925±.017

1.987±.017

2.050±.017

2.112±.017

2.175±.017

2.237±.017

2.300±.020

2.362±.020

2.425±.020

2.487±.020

2.550±.020

2.612±.020

2.675±.022

2.737±.022

2.800±.022

2.862±.022

2.987±.024

3.237±.024

3.487±.024

3.737±.028

3.987±.028

4.237±.030

4.487±.030

4.737±.030

4.987±.035

5.237±.035

5.487±.035

5.737±.035

5.987±.035

6.237±.040

6.487±.040

6.737±.040

6.987±.040

7.237±.045

7.487±.045

7.737±.045

7.987±.045

8.237±.050

8.487±.050

8.737±.050

8.987±.050

9.237±.055

9.487±.055

9.737±.055

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

.103±.003

1.24±0.13

2.06±0.13

2.84±0.13

3.63±0.13

4.42±0.13

5.23±0.13

6.02±0.13

7.59±0.13

9.19±0.13

10.77±0.13

12.37±0.13

13.94±0.18

15.54±0.23

17.12±0.23

18.72±0.23

20.30±0.25

21.89±0.25

23.47±0.25

25.07±0.25

26.64±0.25

28.24±0.25

29.82±0.30

31.42±0.30

32.99±0.30

34.59±0.30

36.17±0.30

37.77±0.30

39.34±0.38

40.94±0.38

42.52±0.38

44.12±0.38

45.69±0.38

47.30±0.38

48.90±0.43

50.47±0.43

52.07±0.43

53.64±0.43

55.25±0.43

56.82±0.43

58.42±0.51

59.99±0.51

61.60±0.51

63.17±0.51

64.77±0.51

66.34±0.51

67.95±0.56

69.52±0.56

71.12±0.56

72.69±0.56

75.87±0.61

82.22±0.61

88.57±0.61

94.92±0.71

101.27±0.71

107.62±0.76

113.97±0.76

120.32±0.76

126.67±0.89

133.02±0.89

139.37±0.89

145.72±0.89

152.07±0.89

158.42±1.02

164.77±1.02

171.12±1.02

177.47±1.02

183.82±1.14

190.17±1.14

196.52±1.14

202.87±1.14

209.22±1.27

215.57±1.27

221.92±1.27

228.27±1.27

234.62±1.40

240.97±1.40

247.32±1.40

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

2.62±0.08

1/16

3/32

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

3-1/4

3-1/2

3-3/4

4

4-1/4

4-1/2

4-3/4

5

5-1/4

5-1/2

5-3/4

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

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

3/32

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

3-3/16

3-7/16

3-11/16

3-15/16

4-3/16

4-7/16

4-11/16

4-15/16

5-3/16

5-7/16

5-11/16

5-15/16

6-3/16

6-7/16

6-11/16

6-15/16

7-3/16

7-7/16

7-11/16

7-15/16

8-3/16

8-7/16

8-11/16

8-15/16

9-3/16

9-7/16

9-11/16

9-15/16
AS568A-
Dash #
Actual
I.D.
Inches
Actual
C.S.
Inches
Actual
I.D.
Millimeters
Actual
C.S.
Millimeters
Nominal
Reference
I.D.
Nominal
Reference
C.S.
Nominal
Reference
O.D.

-201

-202

-203

-204

-205

-206

-207

-208

-209

-210

-211

-212

-213

-214

-215

-216

-217

-218

-219

-220

-221

-222

-223

-224

-225

-226

-227

-228

-229

-230

-231

-232

-233

-234

-235

-236

-237

-238

-239

-240

-241

-242

-243

-244

-245

-246

-247

-248

-249

-250

-251

-252

-253

-254

-255

-256

-257

-258

-259

-260

-261

-262

-263

-264

-265

-266

-267

-268

-269

-270

-271

-272

-273

-274

-275

-276

-277

-278

-279

-280

-281

-282

-283

-284

.171±.005

.234±.005

.296±.005

.359±.005

.421±.005

.484±.005

.546±.007

.609±.009

.671±.009

.734±.010

.796±.010

.859±.010

.921±.010

.984±.010

1.046±.010

1.109±.012

1.171±.012

1.234±.012

1.296±.012

1.359±.012

1.421±.012

1.484±.015

1.609±.015

1.734±.015

1.859±.018

1.984±.018

2.109±.018

2.234±.020

2.359±.020

2.484±.020

2.609±.020

2.734±.024

2.859±.024

2.984±.024

3.109±.024

3.234±.024

3.359±.024

3.484±.024

3.609±.028

3.734±.028

3.859±.028

3.984±.028

4.109±.028

4.234±.030

4.359±.030

4.484±.030

4.609±.030

4.734±.030

4.859±.035

4.984±.035

5.109±.035

5.234±.035

5.359±.035

5.484±.035

5.609±.035

5.734±.035

5.859±.035

5.984±.035

6.234±.040

6.484±.040

6.734±.040

6.984±.040

7.234±.045

7.484±.045

7.734±.045

7.984±.045

8.234±.050

8.484±.050

8.734±.050

8.984±.050

9.234±.055

9.484±.055

9.734±.055

9.984±.055

10.484±.065

10.984±.065

11.484±.065

11.984±.065

12.984±.065

13.984±.065

14.984±.065

15.955±.075

16.955±.080

17.955±.085

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

.139±.004

4.34±0.13

5.94±0.13

7.52±0.13

9.12±0.13

10.69±0.13

12.29±0.13

13.87±0.17

15.47±0.23

17.04±0.23

18.64±0.25

20.22±0.25

21.82±0.25

23.39±0.25