Displaceable flange for dowelling or concreting with integrated seal The flange can be pushed over the pipe to the desired position, the integrated silicone seal prevents water from running along the pipe into the shaft. Blind rivets are attached to the flange to prevent unintentional movement or theft. Fastening material for screwing the flange together with the structure is supplied, this is not required, the flange is concreted. The foam rubber seal fits both sizes and is suitable for sealing the flange on a structure. It is self-adhesive and should be ordered at the same time if the flange is plugged in.