577 is a thread sealant that is designed for the locking and sealing of metal pipes and fittings, as well as other threaded assemblies. The sealant works by filling the space between threaded parts and seals whilst locking at the same time. Features and Benefits Provides an instant, low-pressure seal for metal pipes and fittings Will not creep, shrink or shred and has excellent chemical and thermal resistance, offering less migration of liquid product after application Ensures high strength on contaminated surfaces and high performance on passive metals without an activator Typical Applications For straight/straight and straight/taper threads and fittings