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The LOCTITE LOC51009 is a copper-based anti-seize lubricant compound formulated to prevent galling, seizure, and corrosion on threaded fasteners and mating metal surfaces. Supplied in an 8-pound container, it is applied to bolts, studs, pipe fittings, and flanges prior to assembly to ensure reliable disassembly during future service. HVAC technicians, plumbers, pipefitters, and mechanical contractors reach for this compound on high-temperature and high-load connections where standard lubricants break down. The copper fortification provides a durable protective film that holds up under extreme heat and pressure cycling.
This anti-seize compound is suited for residential and commercial mechanical systems wherever threaded connections are subject to heat, moisture, or corrosive environments. Common applications include gas and steam piping joints, exhaust system fasteners, pump flanges, compressor fittings, and condenser mounting hardware. It is particularly useful in boiler rooms, rooftop HVAC installations, and industrial piping runs where seasonal temperature swings cause fastener seizing over time.
Designed for use on threaded fasteners, pipe fittings, flanges, and mating metal surfaces in HVAC, plumbing, and mechanical piping applications where anti-seize protection is required.
Apply a thin, even coat to clean, dry threads or mating surfaces before assembly. Licensed plumbers, pipefitters, and HVAC technicians should follow applicable code requirements including IFGC and IPC guidelines when working on gas or pressure piping. Avoid applying to surfaces that will contact electrical components or potable water lines unless the product is verified safe for that use. Store the container sealed and away from open flame.
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