Bondloc B577 is a yellow, medium strength anaerobic sealant formulated with Teflon designed for the locking and sealing of metal pipes and fittings.

The product cures when confined in the absence of air between close-fitting metal surfaces. Fills the space between threaded parts and seals and locks at the same time.

B577 provides an instant low pressure seal, does shrink or creep and seals all types of threaded connections.

Excellent chemical / solvent resistance to ethanol, motor oil, unleaded petrol, acetone and brake fluid. Ideal for large fittings, sprinklers system, water and gas line fittings.