It is a self bonding, caulking material, which is used to seal older style openable joints. Here the putty is used to make a waterproof cover to base seal on small and large size openable joints. These joints are used with plastic insulated distribution cable. Features: Used with plastic style distribution cable joints, to make a waterproof cover to base seal, Can be removed to allow the openable joint to be re-entered Material: Butyl rubber