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 |