O-Rings（Hardness：50A）

O-Rings are circular seals made from various materials, commonly used in mechanical systems to prevent the leakage of fluids and gases. They fit into a groove and create a seal when compressed between two surfaces, ensuring a tight fit. O-Rings are essential components in hydraulic and pneumatic applications, as well as in automotive and industrial machinery, contributing to the efficiency and reliability of these systems.

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O-Rings - for Dynamic Applications, P Series

MISUMI

MISUMI O-Rings, P Series, made from Ethylene Propylene Rubber, Fluororubber, Nitrile Rubber, and Silicon Rubber provide reliable sealing solutions by ensuring superior resistance to a wide range of chemicals and temperature extremes. Designed to fit various applications, O-Rings optimize operation and extend equipment lifespan in industrial machinery and automotive systems. With durable construction, O-Rings effectively prevent leakage, protecting sensitive systems without compromising performance, thus enhancing overall efficiency and reliability in demanding environments.

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O-Rings - for Special Sizing, S Series

MISUMI

MISUMI O-Rings are high-quality sealing solutions made from various materials, including fluororubber, nitrile rubber, and silicone rubber, designed to accommodate diverse application needs. These O-Rings effectively prevent leaks and maintain pressure in systems by creating a reliable seal between two surfaces.

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O-Rings - for Larger Diameter Applications

MISUMI

O Rings with Wire Dia. and I.D. selectable

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O-Rings - High Temperature, Soft Silicone【5-25 Pieces Per Package】

USA Industrials

Soft durometer makes these easier to compress than standard Silicone. This makes them an ideal seal at low pressures or when needing to conform to worn grooves. Silicone has an excellent temperature range and good resistance to mild chemicals, animal and vegetable oils, and water.

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O-Rings - Oil-Resistant, Soft Buna-N【5-25 Pieces Per Package】

USA Industrials

Soft durometer makes these easier to compress than standard Buna-N. This makes them an ideal seal at low pressures or when needing to conform to worn grooves. Buna-N is the most commonly used O-Ring material due to its strength and durability. It is suitable for a broad range of fluids including oils, water, and mild chemicals.

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O-Rings - for Static Applications, G Series

MISUMI

MISUMI O-Rings are high-quality sealing components made from materials like fluororubber, nitrile rubber, and silicone rubber. Designed for reliable sealing in multiple applications, they effectively resist fluids and gases. Their durable construction ensures longevity and performance under varying temperature and pressure conditions.

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Brand
Product Series
CAD
Days to Ship
Specifications
O-Ring Type
Inner Diameter d
Cross Section Width(mm)
Material
Hardness
Cleaning Method
Environment/Applications

						Lead Time Reduction
Brand	MISUMI	MISUMI	MISUMI	USA Industrials	USA Industrials	MISUMI
Product Series	O-Rings - for Dynamic Applications, P Series	O-Rings - for Special Sizing, S Series	O-Rings - for Larger Diameter Applications	O-Rings - High Temperature, Soft Silicone【5-25 Pieces Per Package】	O-Rings - Oil-Resistant, Soft Buna-N【5-25 Pieces Per Package】	O-Rings - for Static Applications, G Series
CAD	2D / 3D	2D / 3D	2D / 3D			2D / 3D
Days to Ship	Same Day Stock Items Included	Same Day Stock Items Included	10 Days	32 Days	32 Days	Same Day Stock Items Included
Specifications	Rapid Design	Rapid Design	Rapid Design			Rapid Design
O-Ring Type	P	S	Configurable	-	-	G
Inner Diameter d	2.8 ～ 79.6	2.5 ～ 49.5	160 ～ 2000	3.18 (1/8") ～ 101.6 (4")	1.98 (5/64") ～ 114.3 (4-1/2")	24.4 ～ 79.4
Cross Section Width(mm)	1.9 ～ 5.7	1.5 ～ 2	3.1 ～ 20	1.59 (1/16") ～ 3.18 (1/8")	1.59 (1/16") ～ 4.76 (3/16")	3.1
Material	Silicone Rubber	Silicone Rubber	Silicone Rubber / Fluororubber	Silicone Rubber	Nitrile Rubber	Silicone Rubber
Hardness	50A	50A	50A	50A	50A	50A
Cleaning Method	-	-	-	-	-	-
Environment/Applications	Heat Resistant / Cold Resistant	Heat Resistant / Cold Resistant	Heat Resistant / Cold Resistant	Heat Resistant / Chemical Resistant / Weather Resistant / Water Resistant	Mineral Oil Resistant / Water Resistant	Heat Resistant / Cold Resistant

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Filters

O-Ring Type
- P
- G
- V
- S
- SS
- AS
- JASO
- Configurable
- Back-Up Ring
- Other
Details

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Metric / Inch
- metric
- inch
Clear

Inner Diameter d
0.5

0.74

0.79 (1/32")

0.8

1

1.07

1.19 (3/64")

1.2

1.25

1.42

1.5

1.59 (1/16")

1.78

1.8

1.98 (5/64")

2

2.2

2.24

2.38 (3/32")

2.4

2.5

2.57

2.6

2.7

2.8

2.9

3

3.1

3.15

3.18 (1/8")

3.2

3.3

3.4

3.5

3.55

3.56 (.140")

3.6

3.68

3.7

3.75

3.8

3.97 (5/32")

4

4.1

4.2

4.3

4.34 (.17")

4.4

4.47

4.5

4.6

4.69 (0.185")

4.75

4.76 (3/16")

4.8

4.87

4.9

5

5.1

5.13 (.202")

5.28

5.3

5.4

5.5

5.56 (7/32")

5.6

5.7

5.75

5.8

5.94 (.234")

6

6.02

6.07

6.07 (0.239")

6.1

6.3

6.35 (1/4")

6.4

6.5

6.6

6.7

6.73 (.265")

6.75

6.8

6.97

7

7.1

7.2

7.3

7.4

7.5

7.59

7.6

7.65

7.65 (0.301")

7.8

7.94 (5/16")

8

8.1

8.3

8.31 (.327")

8.4

8.5

8.6

8.73

8.75

8.8

8.9

8.92 (0.351")

9

9.1

9.19

9.25

9.3

9.5

9.53 (3/8")

9.6

9.75

9.8

9.9

9.91 (.390")

10

10.1

10.3

10.4

10.5

10.52 (0.414")

10.6

10.7

10.77

10.8

10.82

11

11.1

11.11 (7/16")

11.2

11.3

11.4

11.48 (.452")

11.5

11.56 (.455")

11.6

11.8

11.89

11.89 (0.468")

11.91

12

12.1

12.29

12.3

12.37

12.4

12.42

12.5

12.6

12.7 (1/2")

12.8

13

13.08 (.515")

13.1

13.2

13.3

13.4

13.46

13.46 (0.53")

13.5

13.6

13.7

13.8

13.94

14

14.1

14.29 (9/16")

14.3

14.4

14.5

14.6

14.66 (.577")

14.73 (.580")

14.8

15

15.08

15.1

15.3

15.4

15.5

15.54

15.6

15.8

15.88 (5/8")

16

16.1

16.26 (.640")

16.3

16.33 (.643")

16.36

16.36 (.644")

16.4

16.5

16.6

16.9

17

17.1

17.12

17.17

17.3

17.4

17.46 (11/16")

17.5

17.6

17.7

17.8

17.83 (.702")

17.86

17.91 (.705")

17.93

17.93 (0.706")

18

18.1

18.3

18.5

18.6

18.64

18.72

18.77

19

19.05 (3/4")

19.1

19.15

19.18 (0.755")

19.3

19.4

19.43 (.765")

19.46 (.766")

19.5

19.51 (.768")

19.7

19.8

20

20.1

20.22

20.29

20.3

20.35

20.5

20.63

20.64 (13/16")

20.8

21

21.03 (.828")

21.13 (.832")

21.2

21.3

21.5

21.7

21.8

21.82

21.89

21.9

21.92 (0.863")

21.95

22

22.1

22.2

22.22

22.23 (7/8")

22.3

22.4

22.5

22.63 (.891")

22.73 (.895")

23

23.3

23.39

23.47

23.47 (0.924")

23.5

23.52

23.6

23.7

23.81 (15/16")

24

24.2

24.21 (.953")

24.31 (.957")

24.4

24.5

24.6

24.7

24.99

25

25.04 (0.986")

25.1

25.12

25.2

25.3

25.4 (1")

25.5

25.7

25.8

25.81 (1.016")

25.91 (1.020")

26

26.2

26.5

26.57

26.59 (1.047")

26.7

26.99 (1-1/16")

27

27.1

27.3

27.38 (1.078")

27.48 (1.082")

27.5

27.6

27.7

27.8

28

28.17

28.3

28.5

28.58 (1-1/8")

28.7

28.98 (1.141")

29

29.1

29.2

29.3

29.4

29.5

29.6

29.7

29.74

29.74 (1.171")

29.87

30

30.16 (1-3/16")

30.2

30.3

30.5

30.56 (1.203")

30.7

31

31.16 (.518")

31.2

31.34

31.42

31.47

31.5

31.6

31.7

31.75 (1-1/4")

32

32.1

32.16 (1.266")

32.2

32.5

32.7

32.92

33

33.05

33.3

33.34 (1-5/16")

33.5

33.7

33.88 (1.334")

34

34.1

34.2

34.4

34.42 (1.355")

34.5

34.52

34.6

34.65

34.7

34.93 (1-3/8")

35

35.1

35.2

35.5

35.7

36

36.09

36.2

36.5

36.51 (1-7/16)

37

37.1

37.3

37.46

37.47 (1.475")

37.5

37.6

37.69

37.7

37.82

38

38.1 (1-1/2")

38.5

38.66 (1.522")

38.7

39

39.2

39.4

39.45

39.5

39.6

39.69 (1-9/16")

39.7

40

40.64

40.7

40.87

41

41.2

41.28 (1-5/8")

41.5

41.6

41.7

42

42.2

42.5

42.52

42.86 (1-11/16")

43

43.5

43.69 (1.72")

43.7

43.82

44

44.04

44.2

44.4

44.45

44.45 (1-3/4")

44.5

44.6

44.7

45

45.5

45.7

45.84

46

46.04

46.2

46.58 (1.834")

46.99

47

47.22

47.5

47.6

47.63 (1-7/8")

47.7

47.96 (1.888")

48

48.7

49

49.2

49.21

49.21 (1-15/16")

49.4

49.5

49.6

49.7

50

50.16

50.39

50.8 (2")

51

51.13 (2.013")

51.4

51.5

51.6

52

52.39 (2-1/16")

52.5

52.6

53

53.09 (2.09")

53.34

53.57

53.64

53.7

53.98 (2-1/8")

54

54.2

54.31 (2.138")

54.4

54.5

54.6

55

55.5

55.56 (2-3/16")

55.6

56

56.52

56.74

56.82

57

57.15 (2-1/4")

57.2

57.4

57.5

57.6

58

58.74 (2-5/16")

59

59.2

59.36 (2.337")

59.4

59.5

59.6

59.69

59.92

60

60.33 (2-3/8")

61

61.4

61.5

61.6

61.91 (2-7/16")

62

62.4

62.5

62.6

62.86

63

63.09

63.4

63.5 (2-1/2")

64

64.4

64.5

64.6

65

65.09 (2-9/16")

66

66.04

66.27

66.4

66.5

66.6

66.68 (2-5/8")

67

68

68.26 (2-11/16")

69

69.2

69.22

69.4

69.44

69.5

69.52

69.6

69.85 (2-3/4")

70

70.5

70.6

71

71.4

71.44 (2-13/16")

72

72.39

72.62

73

73.03 (2-7/8")

74

74.2

74.4

74.5

74.6

75

75.56

75.79

75.92

76

76.2 (3")

77

77.5

78

78.74

79

79.2

79.38 (3-1/8")

79.4

79.5

79.6

80

81

82

82.14

82.22

82.5

82.55 (3-1/4")

83

84

84.4

84.5

84.6

85

85.09

85.32

85.73 (3-3/8")

86

87

87.5

88

88.26

88.49

88.57

88.9 (3-1/2")

89

89.2

89.4

89.5

89.6

90

91

91.44

91.67

92

92.08 (3-5/8")

92.5

93

94

94.4

94.5

94.6

94.62

94.84

94.92

95

95.25 (3-3/4")

96

97

97.5

97.79

98

98.43 (2-7/8")

99

99.4

99.5

99.6

100

100.96

101

101.19

101.6

101.6 (4")

102

103

104

104.14

104.37

104.4

104.5

104.6

104.78 (4-1/8")

105

106

107

107.32

107.54

107.95 (4-1/4")

108

109

109.4

109.5

109.6

110

110.49

110.72

111

111.13 (4-3/8")

111.5

111.6

112

113

113.66

113.89

114

114.3 (4-1/2")

114.4

114.5

114.6

115

116

116.84

117

117.07

117.48 (4-5/8")

118

119

119.4

119.5

119.6

120

120.02

120.24

120.253125 mm

120.65 (4-3/4")

122

123

123.19

123.42

123.83 (4-7/8")

124

124.4

124.5

124.6

125

126

126.36

127 (5")

128

129

129.4

129.5

129.54

129.6

129.77

130

130.18 (5-1/8")

131.5

131.6

132

132.72

132.94

133

133.35 (5-1/4")

134

134.4

134.5

134.6

135

135.89

136

136.53 (5-3/8")

137

138

139

139.06

139.4

139.5

139.6

139.7 (5-1/2")

140

142

142.24

142.88 (5-5/8")

143

143.5

144

144.4

144.5

144.6

145

145.29

145.42

146

146.05 (5-3/4")

147

148

148.5

148.59

149

149.23 (5-7/8")

149.3

149.5

149.6

150

151.76

152

152.07

152.4 (6")

153

154.3

154.5

155

156

158

158.12

158.75 (6-1/4")

159.3

159.5

160

162

163

164

164.3

164.46

164.5

165

165.1 (6.5")

167

168

169.3

169.5

170

170.82

171.45 (6-3/4")

172

173

174

174.2

174.3

174.5

175

177

177.16

177.17

177.39

177.8 (7")

178

179

179.3

179.5

180

182

183.52

183.74

184.15 (7-1/4")

184.3

184.5

185

188

189

189.3

189.5

189.86

190

190.17

190.5 (7-1/2")

192

193

194

194.3

194.5

195

196.85 (7-3/4")

198

199.3

199.5

200

202.56

203

203.2 (8")

204.3

204.5

205

206

208

208.5

209

209.3

209.5

209.55 (8-1/4")

210

212

213

214

214.3

214.5

215

215.26

215.9 (8-1/2")

218

219.3

219.5

220

222.25 (8-3/4")

222.5

224

224.3

224.5

225

227.96

228

228.19

228.6 (9")

229.3

229.5

230

232

234.3

234.5

234.95 (9-1/4")

235

236

237.5

239.3

239.5

240

240.66

241.3 (9-1/2")

242

243

244.3

244.5

245

247.65 (9-3/4")

249.3

249.5

250

253.36

254 (10")

254.3

254.5

255

257.5

258

259.3

259.5

260

262.5

264.3

264.5

265

266

266.06

266.7 (10-1/2")

269.3

269.5

270

272

274.3

274.5

275

278.76

279.3

279.4 (11")

279.5

280

284.3

284.5

285

289.3

289.5

290

291.46

292

292.1 (11-1/2")

294.3

294.5

296

299.3

299.5

300

304.16

304.5

304.8 (12")

305

307

309.3

309.5

310

314.3

314.5

315

317

317.5 (12-1/2")

319.3

319.5

320

321.5

324.3

324.5

325

329.3

329.5

329.56

329.79

330

330.2 (13")

334.5

335

339.3

339.5

340

342.26

342.9 (13-1/2")

345

349.5

350

354.5

354.96

355

355.6 (14")

359.5

360

364.5

365

367.66

368.3 (14-1/2")

369.5

374.3

374.5

375

376

379.3

380

380.36

381 (15")

384.3

384.5

387

389.3

393.06

393.7 (15-1/2")

399.5

400

405.26

406.4 (16")

409.3

411

412

419.1 (16-1/2")

425

425.5

431.8 (17")

437

444.5 (17-1/2")

449.3

457.2 (18")

459.3

462

469.9 (18-1/2")

475

482.6 (19")

487

495.3 (19-1/2")

504.5

508 (20")

524.5

529.5

533.4 (21")

544

545

558.8 (22")

560

579

580

584.2 (23")

600

609.6 (24")

615

630

633.5

635 (25")

660.4 (26")

670

683

732.5

782

836.5

940.5
[160-2000/1]
Drawing

Clear

Cross Section Width(mm)
0.79 (1/32")

1

1.02

1.19 (3/64")

1.2

1.27

1.3

1.35 (.053")

1.42 (0.056")

1.5

1.52

1.59 (1/16")

1.6

1.63

1.63 (0.064")

1.7

1.78

1.8

1.83 (0.072")

1.9

1.98

1.98 (0.078")

2

2.08

2.08 (0.082")

2.18 (.086")

2.21

2.21 (0.087")

2.25

2.38 (3/32")

2.4

2.46

2.46 (0.097")

2.5

2.62

2.65

2.7

2.95 (0.116")

3

3.02 (.119")

3.1

3.18 (1/8")

3.3

3.5

3.53

3.55

3.6

3.97 (5/32")

4

4.5

4.65 (.183")

4.76 (3/16")

5

5.3

5.33

5.7

6

6.35 (1/4")

6.98

7

7.5

7.94 (5/16")

8

8.4

9

9.53 (3/8")

10

11

11.11 (7/16")

12

12.7 (1/2")

13

15

15.88 (5/8")

16

18

19.05 (3/4")

20
Drawing

Clear

Material
- Nitrile Rubber
- Ethylene Propylene Rubber
- Silicone Rubber
- Hydrogenated Nitrile Rubber
- Fluororubber
- Perfluoroelastomer
- Fluoro-Silicone Rubber
- Fluororesin
Clear

Hardness
- 50A
- 55D
- 60A
- 70A
- 74A
- 75A
- 90A
Clear

Cleaning Method
- Degreasing
- Precision Cleaning
Clear

Environment/Applications
- Mineral Oil Resistant
- Gasoline Resistant
- Animal/Vegetable Oil Resistant
- Heat Resistant
- Coolant Resistant
- Abrasion Resistant
- Pressure Resistant
- Chemical Resistant
- Weather Resistant
- Cold Resistant
- Water Resistant
- Hot Water Resistant
Clear

Brand

- MISUMI (4)
- C-Value ()
- USA Industrials (2)
- CKD (0)
- Akitsu Industry (0)
- Masuoka (0)
- Sunco (0)
- NOK (0)
- Musashi Oil Seal (0)
- MORISEI KAKO (0)
Clear

O-Rings（Hardness：50A）

Configure

Filters

O-Ring Type

Metric / Inch

Inner Diameter d

Cross Section Width(mm)

Material

Hardness

Cleaning Method

Environment/Applications

Brand

CAD

Application example related to this category

Related Categories to O-Rings