Seals ducts at cable and pipe penetration points through tank and building walls. Consists of a 30 mm (1.2 in.) thick rubber disk with two stainless-steel plates and clamp bolts. With integrated electric cable seal. Can be used only for „non-pressurized“ water. The designations WD 100, WD 110 refer in each case to the outside diameter of the wall duct.
When a standard sewer pipe with DN 100 is used, the wall bushing WD 100 fits exactly into the pipe and the wall bushing WD 110 into the collar.