O-RING & Oil Seal  
 

Custom Rubber     
 

Rubber Auto Parts  
 

Silicone Products    
 

Hardware Rubber   
 

O-RING Cords         
 

Material Properties
 

O-RING Size             
 

Catalog Download  
 

O-RING

 

 

        An O-ring is a round ring that is used as a gasket for sealing a connection. O-rings are typically constructed out of polyurethane, silicone, neoprene, nitrile rubber or fluorocarbon. These rings are commonly used in mechanical applications, such as pipe connections, and help to ensure a tight seal between two objects. O-rings are designed to be seated in a groove or housing that keeps the ring in place. Once in its track, the ring is compressed between the two pieces and, in turn, creates a strong seal where they meet.

        The seal that a rubber O-ring creates can either exist in a motionless joint, such as between piping, or a movable joint, such as a hydraulic cylinder. However, movable joints often require that the O-ring be lubricated. In a moving enclosure this ensures slower deterioration of the O-ring and therefore, extends the useful life of the product.

      O-rings are both inexpensive and simple in design and are therefore very popular in manufacturing and industry. If mounted correctly, O-rings can withstand a very large amount of pressure and are therefore used in many applications where leaks or loss of pressure are unacceptable. For instance, O-rings used in hydraulic cylinders prevent leakage of hydraulic fluid and allow for the system to create and withstand the pressures required for operation.

Rubber Material Properties

 

  Excellent             Good           Fair      Limited          Poor

 

NR

SBR

BR

 EPDM

CR

NBR

ACM

SI

FKM

Tensile Strength

Elongation

Rebound Resistance

Tear Resistance

Abrasion-Resistance

Impact Strength Resistance

Air Impermeability Resistance

Oxygen Resistance

Ozone Resistance

Weathering Resistance

Sunlight Resistance

Heat Resistance

Low Temperature Resistance

Oil and Fuel Resistance

Oxygenated-Solvent Resistance

Water Resistance

 

O-RING SIZE

O-RING SIZE Ref.
AS568

O-RING STASNDASRD SIZE INCHES

O-RING  STASNDASRD SIZE MILLIMETERS

ID

W

ID

W

AS-001

0.029

0.040

0.74

1.02

AS-002

0.042

0.050

1.07

1.27

AS-003

0.056

0.060

1.42

1.52

AS-004

0.070

0.070

1.78

1.78

AS-005

0.101

0.070

2.57

1.78

AS-006

0.114

0.070

2.90

1.78

AS-007

0.145

0.070

3.68

1.78

AS-008

0.176

0.070

4.47

1.78

AS-009

0.208

0.070

5.28

1.78

AS-010

0.239

0.070

6.07

1.78

AS-011

0.301

0.070

7.65

1.78

AS-012

0.364

0.070

9.25

1.78

AS-013

0.426

0.070

10.82

1.78

AS-014

0.489

0.070

12.42

1.78

AS-015

0.551

0.070

14.00

1.78

AS-016

0.614

0.070

15.60

1.78

AS-017

0.676

0.070

17.17

1.78

AS-018

0.739

0.070

18.77

1.78

AS-019

0.801

0.070

20.35

1.78

AS-020

0.864

0.070

21.95

1.78

AS-021

0.926

0.070

23.52

1.78

AS-022

0.989

0.070

25.12

1.78

AS-023

1.051

0.070

26.70

1.78

AS-024

1.114

0.070

28.30

1.78

AS-025

1.176

0.070

29.87

1.78

AS-026

1.239

0.070

31.47

1.78

AS-027

1.301

0.070

33.05

1.78

AS-028

1.364

0.070

34.65

1.78

AS-029

1.489

0.070

37.82

1.78

AS-030

1.614

0.070

41.00

1.78

AS-031

1.739

0.070

44.17

1.78

AS-032

1.864

0.070

47.35

1.78

AS-033

1.989

0.070

50.52

1.78

AS-034

2.114

0.070

53.70

1.78

AS-035

2.239

0.070

56.87

1.78

O-RING AS- 001 

O-RING SIZE Ref.
AS568

O-RING STASNDASRD SIZE INCHES

O-RING STASNDASRD SIZE MILLIMETERS

ID

W

ID

W

AS-036

2.364

0.070

60.05

1.78

AS-037

2.489

0.070

63.22

1.78

AS-038

2.614

0.070

66.40

1.78

AS-039

2.739

0.070

69.57

1.78

AS-040

2.864

0.070

72.75

1.78

AS-041

2.989

0.070

75.92

1.78

AS-042

3.239

0.070

82.27

1.78

AS-043

3.489

0.070

88.62

1.78

AS-044

3.739

0.070

94.97

1.78

AS-045

3.989

0.070

101.32

1.78

AS-046

4.239

0.070

107.67

1.78

AS-047

4.489

0.070

114.02

1.78

AS-048

4.739

0.070

120.37

1.78

AS-049

4.989

0.070

126.72

1.78

AS-050

5.239

0.070

133.07

1.78

AS-102

0.049

0.103

1.24

2.62

AS-103

0.081

0.103

2.06

2.62

AS-104

0.112

0.103

2.84

2.62

AS-105

0.143

0.103

3.63

2.62

AS-106

0.174

0.103

4.42

2.62

AS-107

0.206

0.103

5.23

2.62

AS-108

0.237

0.103

6.02

2.62

AS-109

0.299

0.103

7.59

2.62

AS-110

0.362

0.103

9.19

2.62

AS-111

0.424

0.103

10.77

2.62

AS-112

0.487

0.103

12.37

2.62

AS-113

0.549

0.103

13.94

2.62

AS-114

0.612

0.103

15.54

2.62

AS-115

0.674

0.103

17.12

2.62

AS-116

0.737

0.103

18.72

2.62

AS-117

0.799

0.103

20.30

2.62

AS-118

0.862

0.103

21.89

2.62

AS-119

0.924

0.103

23.47

2.62

AS-120

0.987

0.103

25.07

2.62

AS-121

1.049

0.103

26.64

2.62

                O-RING AS-001        O-RING AS-036

 

 

O-RING SIZE Ref.
AS568

O-RING STASNDASRD SIZE INCHES

O-RING STASNDASRD SIZE MILLIMETERS

ID

W

ID

W

AS-122

1.112

0.103

28.24

2.62

AS-123

1.174

0.103

29.82

2.62

AS-124

1.237

0.103

31.42

2.62

AS-125

1.299

0.103

32.99

2.62

AS-126

1.362

0.103

34.59

2.62

AS-127

1.424

0.103

36.17

2.62

AS-128

1.487

0.103

37.77

2.62

AS-129

1.549

0.103

39.34

2.62

AS-130

1.612

0.103

40.94

2.62

AS-131

1.674

0.103

42.52

2.62

AS-132

1.737

0.103

44.12

2.62

AS-133

1.799

0.103

45.69

2.62

AS-134

1.862

0.103

47.29

2.62

AS-135

1.925

0.103

48.90

2.62

AS-136

1.987

0.103

50.47

2.62

AS-137

2.050

0.103

52.07

2.62

AS-138

2.112

0.103

53.64

2.62

AS-139

2.175

0.103

55.25

2.62

AS-140

2.237

0.103

56.82

2.62

AS-141

2.300

0.103

58.42

2.62

AS-142

2.362

0.103

59.99

2.62

AS-143

2.425

0.103

61.60

2.62

AS-144

2.487

0.103

63.17

2.62

AS-145

2.550

0.103

64.77

2.62

AS-146

2.612

0.103

66.34

2.62

AS-147

2.675

0.103

67.95

2.62

AS-148

2.737

0.103

69.52

2.62

AS-149

2.800

0.103

71.12

2.62

AS-150

2.862

0.103

72.69

2.62

AS-151

2.987

0.103

75.87

2.62

AS-152

3.237

0.103

82.22

2.62

AS-153

3.487

0.103

88.57

2.62

AS-154

3.737

0.103

94.92

2.62

AS-155

3.987

0.103

101.27

2.62

AS-156

4.237

0.103

107.62

2.62

             O-RING AS-001     O-RING AS-122

O-RING SIZE Ref.
AS568

O-RING STASNDASRD SIZE INCHES

O-RING STASNDASRD SIZE MILLIMETERS

ID

W

ID

W

AS-157

4.487

0.103

113.97

2.62

AS-158

4.737

0.103

120.32

2.62

AS-159

4.987

0.103

126.67

2.62

AS-160

5.237

0.103

133.02

2.62

AS-161

5.487

0.103

139.37

2.62

AS-162

5.737

0.103

145.72

2.62

AS-163

5.987

0.103

152.07

2.62

AS-164

6.237

0.103

158.42

2.62

AS-165

6.487

0.103

164.77

2.62

AS-166

6.737

0.103

171.12

2.62

AS-167

6.987

0.103

177.47

2.62

AS-168

7.237

0.103

183.82

2.62

AS-169

7.487

0.103

190.17

2.62

AS-170

7.737

0.103

196.52

2.62

AS-171

7.987

0.103

202.87

2.62

AS-172

8.237

0.103

209.22

2.62

AS-173

8.487

0.103

215.57

2.62

AS-174

8.737

0.103

221.92

2.62

AS-175

8.987

0.103

228.27

2.62

AS-176

9.237

0.103

234.62

2.62

AS-177

9.487

0.103

240.97

2.62

AS-178

9.737

0.103

247.32

2.62

AS-201

0.171

0.139

4.34

3.53

AS-202

0.234

0.139

5.94

3.53

AS-203

0.296

0.139

7.52

3.53

AS-204

0.359

0.139

9.12

3.53

AS-205

0.421

0.139

10.69

3.53

AS-206

0.484

0.139

12.29

3.53

AS-207

0.546

0.139

13.87

3.53

AS-208

0.609

0.139

15.47

3.53

AS-209

0.671

0.139

17.04

3.53

AS-210

0.734

0.139

18.64

3.53

AS-211

0.796

0.139

20.22

3.53

AS-212

0.859

0.139

21.82

3.53

AS-213

0.921

0.139

23.39

3.53

             O-RING AS-001      O-RING AS-157

 

O-RING SIZE Ref.
AS568

O-RING STASNDASRD SIZE INCHES

O-RING STASNDASRD SIZE MILLIMETERS

ID

W

ID

W

AS-214

0.984

0.139

24.99

3.53

AS-215

1.046

0.139

26.57

3.53

AS-216

1.109

0.139

28.17

3.53

AS-217

1.171

0.139

29.74

3.53

AS-218

1.234

0.139

31.34

3.53

AS-219

1.296

0.139

32.92

3.53

AS-220

1.359

0.139

34.52

3.53

AS-221

1.421

0.139

36.09

3.53

AS-222

1.484

0.139

37.69

3.53

AS-223

1.609

0.139

40.87

3.53

AS-224

1.734

0.139

44.04

3.53

AS-225

1.859

0.139

47.22

3.53

AS-226

1.984

0.139

50.39

3.53

AS-227

2.109

0.139

53.57

3.53

AS-228

2.234

0.139

56.74

3.53

AS-229

2.359

0.139

59.92

3.53

AS-230

2.484

0.139

63.09

3.53

AS-231

2.609

0.139

66.27

3.53

AS-232

2.734

0.139

69.44

3.53

AS-233

2.859

0.139

72.62

3.53

AS-234

2.984

0.139

75.79

3.53

AS-235

3.109

0.139

78.97

3.53

AS-236

3.234

0.139

82.14

3.53

AS-237

3.359

0.139

85.32

3.53

AS-238

3.484

0.139

88.49

3.53

AS-239

3.609

0.139

91.67

3.53

AS-240

3.734

0.139

94.84

3.53

AS-241

3.859

0.139

98.02

3.53

AS-242

3.984

0.139

101.19

3.53

AS-243

4.109

0.139

104.37

3.53

AS-244

4.234

0.139

107.54

3.53

AS-245

4.359

0.139

110.72

3.53

AS-246

4.484

0.139

113.89

3.53

AS-247

4.609

0.139

117.07

3.53

AS-248

4.734

0.139

120.24

3.53

         

O-RING AS-001      O-RING AS-214

O型環 SIZE Ref.
AS568

O型環 STASNDASRD SIZE INCHES

O型環 STASNDASRD SIZE MILLIMETERS

ID

W

ID

W

AS-249

4.859

0.139

123.42

3.53

AS-250

4.984

0.139

126.59

3.53

AS-251

5.109

0.139

129.77

3.53

AS-252

5.234

0.139

132.94

3.53

AS-253

5.359

0.139

136.12

3.53

AS-254

5.484

0.139

139.29

3.53

AS-255

5.609

0.139

142.47

3.53

AS-256

5.734

0.139

145.64

3.53

AS-257

5.859

0.139

148.82

3.53

AS-258

5.984

0.139

151.99

3.53

AS-259

6.234

0.139

158.34

3.53

AS-260

6.484

0.139

164.69

3.53

AS-261

6.734

0.139

171.04

3.53

AS-262

6.984

0.139

177.39

3.53

AS-263

7.234

0.139

183.74

3.53

AS-264

7.484

0.139

190.09

3.53

AS-265

7.734

0.139

196.44

3.53

AS-266

7.984

0.139

202.79

3.53

AS-267

8.234

0.139

209.14

3.53

AS-268

8.484

0.139

215.49

3.53

AS-269

8.784

0.139

221.84

3.53

AS-270

8.984

0.139

228.19

3.53

AS-271

9.234

0.139

234.54

3.53

AS-272

9.484

0.139

240.89

3.53

AS-273

9.734

0.139

247.24

3.53

AS-274

9.984

0.139

253.59

3.53

AS-275

10.484

0.139

266.29

3.53

AS-276

10.984

0.139

278.99

3.53

AS-277

11.484

0.139

291.69

3.53

AS-278

11.984

0.139

304.39

3.53

AS-279

12.984

0.139

329.79

3.53

AS-280

13.984

0.139

355.19

3.53

AS-281

14.984

0.139

380.59

3.53

AS-282

15.955

0.139

405.26

3.53

AS-283

16.955

0.139

430.66

3.53

             O-RING AS-001      O-RING AS-249

 

 

O-RING SIZE Ref.
AS568

O-RING STASNDASRD SIZE INCHES

O-RING STASNDASRD SIZE MILLIMETERS

ID

W

ID

W

AS-284

17.955

0.139

456.06

3.53

AS-309

0.412

0.210

10.46

5.33

AS-310

0.475

0.210

12.07

5.33

AS-311

0.537

0.210

13.64

5.33

AS-312

0.600

0.210

15.24

5.33

AS-313

0.662

0.210

16.81

5.33

AS-314

0.725

0.210

18.42

5.33

AS-315

0.787

0.210

19.99

5.33

AS-316

0.850

0.210

21.59

5.33

AS-317

0.912

0.210

23.16

5.33

AS-318

0.975

0.210

24.77

5.33

AS-319

1.037

0.210

26.34

5.33

AS-320

1.100

0.210

27.94

5.33

AS-321

1.162

0.210

29.51

5.33

AS-322

1.225

0.210

31.12

5.33

AS-323

1.287

0.210

32.69

5.33

AS-324

1.350

0.210

34.29

5.33

AS-325

1.475

0.210

37.47

5.33

AS-326

1.600

0.210

40.64

5.33

AS-327

1.725

0.210

43.82

5.33

AS-328

1.850

0.210

46.99

5.33

AS-329

1.975

0.210

50.17

5.33

AS-330

2.100

0.210

53.34

5.33

AS-331

2.225

0.210

56.52

5.33

AS-332

2.350