Anti-Seize Compound

Copper, nickel, and aluminum compounds that prevent fasteners from seizing under heat.

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Anti-seize compound is a metal-particle paste you brush on bolt threads to keep them from welding themselves to whatever they're threaded into — lug studs, exhaust manifold bolts, spark plugs in aluminum heads. Use it any time you're installing hardware that'll see heat or moisture and you want it to come back out years later without snapping. A little goes a long way; over-application can throw off torque readings. Keep a tub in the toolbox next to the dielectric grease.

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