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Backup Rings

Ductile Iron Backup Rings

Nominal OD

Actual OD (in)

Pressure Class (psi)

Dimensions B.C. x T (in)

Weight (lbs)

Bolt Length

Bolt Hole Diameter

Bolt Number

Part Number

1 1/2"

1.9

335

3.88 x 0.69

1.6

4.5

5/8

4

1105928F

2"

2.375

335

4.75 x 0.75

2.5

4.5

3/4

4

1101130F

3"

3.5

335

6.0 x 0.94

3.5

4.5

3/4

4

1101131F

4"

4.5

335

7.5 x 0.94

4.8

5.5

3/4

8

1101182F

6"

6.625

335

9.5 x 1.0

6.75

6.5

7/8

8

1101183F

8"

8.625

335

11.75 x 1.12

10

7.5

7/8

8

1101184F

10"

10.75

335

14.25 x 1.15

15

8.5

1

12

1101185F

12"

12.75

335

17.00 x 1.50

24

9

1

12

1101187F

14"

14”

335

18.34 x 1.63

33

10

1 1/8

12

1101189F

16"

16”

335

21.25 x 1.88

49

10.5

1 1/8

16

1101191F

18"

18”

335

22.35 x 2.00

51

11.5

1 1/4

16

1101193F