This socket plug is used to blank off a connection to a soil pipe that is no longer required.As cast iron push fit pipes and fittings are all plain ended a coupler is required to connect this plug to a soil pipe or fitting.All of our push fit cast iron soil fittings are treated to a factory black two-pack gloss paint finish. The whole range is manufactured in grey cast iron to BS EN 1561.This soil pipe range is particularly well-suited to installations in public buildings, listed buildings and conservation projects. It is 100% recyclable. Click here to view or download full installation instructions.