A

B

C

A

B 

Nominal Flange Outside Diameter

Nominal Overall Length

Minimum Set Internal Diam.

Nominal Outside Diameter

Nominal Inside Diameter

BS 
SIZE

ins

mm

ins 

mm

ins 

mm

BS
SIZE

ins

mm

ins 

mm

000

^13/32

10.32

^3/16

4.76

^13/64

5.16

000B

^13/32

10.32

^15/64

5.95

00

^9/16

14.29

^7/32

5.56

^1/4

6.35

00B

^19/16

14.29

^5/16

7.94

0

^43/64

17.07

^1/4

6.35

^21/64

8.33

0B

^43/64

17.07

^3/8

9.53

1

^13/16

20.64

^19/64

7.54

^3/8

9.53

1B

^13/16

20.64

^29/64

11.51

2

15/16

23.81

^11/32

8.73

^15/32

11.91

2B

^15/16

23.81

^17/32

13.49

3

1

25.40

^23/64

9.13

^1/2 

12.70

3B

1

25.40

^9/16

14.29

4

1^1/8

28.58

^13/32

10.32

^37/64

14.68

4B

1^1/8

28.58

^21/32

16.67

5

1^11/32

34.13

^15/32

11.91

^43/64

17.07

5C

1^11/32

34.13

^3/4

19.05

6

1^9/16

39.69

^17/32

13.49

^25/32

19.84

6C

1^9/16

39.69

^59/64

23.42

7

1^3/4

44.45

^17/32

1349

^29/32

23.02

7C

1^3/4

44.45

1^1/16

26.99

8

1^7/8

47.63

^17/32

13.49

1^1/16

26.99

8C

1^7/8

47.63

1^7/32

30.69