McAlpine WC-BP1 Boss Pipe For Use With WC Connectors

3½”/90mm ‘O’ Seal Socket Finned seal spigot for internal connections to cast iron, plastic or clay 4″/110mm pipe Designed for use with McAlpine Rigid or Flexible WC Connector with 4″/110mm rubber outlet seal WC rubber outlet seal is removed and plain end of WC Connector is cut to length then inserted in to the ‘O’ seal socket