Bondloc b572 white pipe seal is 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 and prevents loosening and leakage from shock and vibration the thixotropic nature reduces the migration of liquid product after application to the substrate has a good chemicalsolvent resistance to ethanol motor oil unleaded petrol and brake fluid b572 is unusual in that it does not fully cure until some 60 ho