Permatex™ Seal + Lock Thread Compound is a one-of-a-kind product that combines the power of a thread sealant and a threadlocker into one. Current products on the market can only seal or lock, but Permatex has created a revolutionary product that does both. With this hybrid thread compound, sealed connections will not loosen and locked fittings will not leak. Creates air and water tight seal Seals to 1000 psi Locks to 120 lbs. sq. in. Temperature resistant between -60 °F to 300 °F Solvent resistant Immediate low pressure sealing Resists all common shop fluids Cures without cracking Removable with hand tools Medium strength 35 ml tube MPN: 57535 Application Automotive Threaded freeze plugs Oil pressure sensor Fuel line supply nuts and bolts Threaded fuel injectors Coolant temperature sensor Power steering cooler line nuts Brake master cylinder line nuts A/C systems Plumbing systems Hydraulic Hardware Metal plumbing connections Gardening hose and sprinkler connections Metal pipe plugs