Marine Firestop Putty Marine Firestop Putty (MPU) is designed to seal small to medium-sized openings in H60, A0-A60, and B0-B30 Class divisions in marine and offshore construction for pipes and cables. Marine Firestop Putty is a non-hardening, moldable compound that can be handpicked into openings for permanent or temporary sealing. This product complies with International […]
