Split ring type inserts are used with backing flanges. These are
made of cast iron with asbestos lining. New inserts made of suitable
composite rubber material are being introduced and are presently supplied
for 25 and 150 DN size.
| Cat. Ref. | DN | D | D1 | L | Type |
| CN1 CN1.5 CN2 CN3 CN4 CN6 CN9 CN12 CN16 CN18 CN24 |
25 40 50 80 100 150 225 300 400 450 600 |
50 65 80 111 147 195 280 361 474 555 684 |
34 48 61 90 119 168 240 324 431 500 634 |
10 10 8 9 10 10 10 10 12 18 10 |
A A B B B B B B B B C |
