Loctite 572 - 250ml - Thread Sealant brand new unopened will post same day as purchased more than one available also check out my other items you won't find items cheaper else where Sealed 250ml / 313g Loctite 572 thread sealant. Use by date 04/2026. One site describes this sealant as follows... "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 of LOCTITE® 572 reduces the migration of liquid product after application to the substrate."