LOCTITE® MR GS2 is a black, slow drying, flexible setting, solvent-based sealant paste, which changes to a pliable, non-hardening film. It seals flanges, fittings, connections and flexible assemblies, and improves the sealing of pre-formed gaskets made of, e.g., cork, metal, plastic or rubber in non-rigid assemblies that may require disassembly at frequent intervals.