Lansdale’s Lans Seal Pipe Dope is a premium thread sealant with PTFE. It is a non-hardening thread sealant, that is suitable for use on all types of piping used in fire sprinkler, plumbing and industrial applications. It can be used on CPVC and is FBC Compatible. The Lans Seal pipe dope will help prevent leaks by filling voids in the threads and the PTFE offers improved lubricating qualities which achieves improved fitting assembly and sealing.