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 O-Ring Technical data
Rubber Cord Tolerance List Cross-section ISO 3302-1
Size Class E1 ± Class E2 ± Class E3 ±
From To(include)
0 1.5 0.15 0.25 0.40
1.5 2.5 0.20 0.35 0.50
2.5 4.0 0.25 0.40 0.70
4.0 6.3 0.35 0.50 0.80
6.3 10 0.40 0.70 1.00
10 16 0.50 0.80 1.30
16 25 0.70 1.00 1.60
25 40 0.80 1.30 2.00
40 63 1.00 1.60 2.50
63 100 1.30 2.00 3.20
E1: high quality
E2: good quality
E3: non-critical


O-Ring Size Indication & Tolerance Chart
ID TOL (±) C/S TOL (±)
- 1.50 0.10 - 2.00 0.07
1.51 - 14.00 0.12 2.01 - 3.00 0.08
14.01 - 25.00 0.22 3.01 - 4.00 0.10
25.01 - 30.00 0.25 4.01 - 5.00 0.12
30.01 - 38.00 0.30 5.01 - 7.00 0.15
38.01 - 42.00 0.33 7.01 - 10.00 0.20
42.01 - 48.00 0.38 10.01 - 15.00 0.25
48.01 - 57.00 0.43 15.01 - 25.00 0.35
57.01 - 64.00 0.45 25.01 - 100.00 0.45
64.01 - 73.00 0.50
73.01 - 89.00 0.60
89.01 - 102.00 0.68
102.01 - 105.00 0.71
105.01 - 125.00 0.76
125.01 - 153.00 0.88
153.01 - 178.00 1.01
178.01 - 203.00 1.14
203.01 - 230.00 1.27
230.01 - 267.00 1.39
267.01 - 330.00 1.52
330.01 - 381.00 1.65
381.01 - 394.00 1.77
394.01 - 418.00 1.90
418.01 - 431.00 2.03
431.01 - 470.00 2.15
470.01 - 533.00 2.28
533.01 - 558.00 2.54
558.01 - 583.00 2.66
583.01 - 610.00 2.79
610.01 - 634.00 2.92
634.01 - 660.00 3.04
660.01 - 999.00 5.00

Hardness / Working Pressure Chart
Pressure
(kg/cm2)
Hardness Shore A 35 KG/CM2 70 KG/CM2 105 KG/CM2 140 KG/CM2 175 KG/CM2 210 KG/CM2 350 KG/CM2
Crosssection
(mm)
1.78 70 0.15 0.10 0.05
80 0.20 0.15 0.10 0.05 0.03
90 0.25 0.20 0.13 0.10 0.08 0.05 0.03
2.62 70 0.18 0.13 0.08
80 0.25 0.18 0.13 0.08 0.04
90 0.30 0.25 0.18 0.13 0.10 0.08 0.04
3.53 70 0.20 0.15 0.10
80 0.30 0.20 0.15 0.10 0.05
90 0.40 0.30 0.20 0.15 0.13 0.10 0.05
5.34 70 0.25 0.18 0.13
80 0.35 0.25 0.18 0.13 0.06
90 0.45 0.35 0.25 0.18 0.15 0.13 0.06

7.00

70 0.30 0.20 0.15
80 0.40 0.30 0.20 0.15 0.07
90 0.50 0.40 0.30 0.20 0.18 0.15 0.07

O-Ring Fitting Dimension Chart (Static)

c/s

t

b

c/s

t

b

1.00

0.80

1.3

1.50

1.10

1.9

5.00

4.00

6.5

1.60

1.20

2.1

5.33

4.30

6.9

1.78

1.30

2.3

5.50

4.50

7.1

1.90

1.40

2.4

5.70

4.65

7.4

2.00

1.50

2.6

6.00

4.95

7.8

2.40

1.80

3.1

6.50

5.40

8.4

2.50

1.90

3.2

6.99

5.85

9.1

2.62

2.00

3.4

7.00

5.85

9.1

2.70

2.10

3.5

7.50

6.30

9.7

3.00

2.30

3.9

8.00

6.75

10.4

3.50

2.70

4.5

8.40

7.15

10.9

3.53

2.70

4.5

8.50

7.25

11.0

3.60

2.80

4.7

9.00

7.70

11.7

4.00

3.15

5.2

9.50

8.20

12.3

4.50

36.0

5.8

10.00

8.65

13.0

O-Ring Fitting Dimension Chart (Dynamic)
medium = liquid

c/s

t

b

Z

1.00

0.90

1.3

1.0

1.50

1.30

1.9

1.0

1.60

1.40

2.0

1.1

1.78

1.50

2.3

1.1

1.90

1.60

2.4

1.2

2.00

1.70

2.4

1.2

2.40

2.10

2.9

1.4

2.50

2.20

3.0

1.4

2.62

2.30

3.1

1.5

2.70

2.40

3.2

1.5

3.00

2.60

3.6

1.6

3.50

3.10

4.2

1.8

3.53

3.10

4.2

1.8

3.60

3.20

4.3

1.8

4.00

3.50

4.8

2.0

4.50

4.00

5.4

2.3

c/s

t

b

Z

5.00

4.45

6.0

2.5

5.33

4.70

6.4

2.7

5.50

4.95

6.6

2.8

5.70

5.10

6.9

3.0

6.00

5.40

7.2

3.1

6.50

5.80

7.8

3.3

6.99

6.30

8.4

3.6

7.00

6.30

8.4

3.6

7.50

6.70

9.0

3.8

8.00

7.20

9.6

4.0

8.40

7.60

10.1

4.2

8.50

7.70

10.2

4.2

9.00

8.20

10.8

4.3

9.50

8.60

11.4

4.4

10.00

9.10

12.0

4.5

medium = air

c/s

t

b

Z

1.00

0.95

1.3

1.0

1.50

1.35

1.9

1.0

1.60

1.45

2.0

1.1

1.78

1.55

2.3

1.1

1.90

1.75

2.4

1.2

2.00

1.80

2.4

1.2

2.40

2.15

2.9

1.4

2.50

2.25

3.0

1.4

2.62

2.35

3.1

1.5

2.70

2.45

3.2

1.5

3.00

2.75

3.6

1.6

3.50

3.25

4.2

1.8

3.53

3.25

4.2

1.8

3.60

3.35

4.3

1.8

4.00

3.70

4.8

2.0

4.50

4.20

5.4

2.3

C/S

t

b

Z

5.00

4.65

6.0

2.5

5.33

4.95

6.4

2.7

5.50

5.15

6.6

2.8

5.70

5.35

6.9

3.0

6.00

5.65

7.2

3.1

6.50

6.10

7.8

3.3

6.99

6.60

8.4

3.6

7.00

6.60

8.4

3.6

7.50

7.10

9.0

3.8

8.00

7.60

9.6

4.0

8.40

7.90

10.1

4.2

8.50

8.00

10.2

4.2

9.00

8.50

10.8

4.3

9.50

9.00

11.4

4.4

10.00

9.50

12.0

4.5