Flexible joint NO-LOSS

The "no-loss" sealing ring guarantees the tightness of the system in all cases in which - for different kind of reasons - the normal EPDM sealing ring does not work property. The "no-loss" sealing ring has the capadty to expand his volume more than three times just by having contact with water; thanks to this feature, his reaction fills totally the space between the external pipe wall and the internal coupling wall. The "no-loss" sealing ring is to be used in addition to the normal EPDM sealing ring and has to be positioned in the space between the second and the third corrugation.