ETs Jet-Lube Kopr-Kote Copper Anti-Seize is suitable for a wide range of metal-to-metal contact surfaces, including bolts, gaskets, pipe fittings, and flanges. Its resistance to salt water, steam, and most chemical vapors makes it a dependable choice for harsh conditions. Easy to apply by brush, spatula, or automated systems, Kopr-Kote stays in place and maintains a consistent barrier. Whether used in assembly or preventative maintenance, JL4 offers long-term protection and performance reliability.