Permatex Copper Anti-Seize Lubricant 1 lb Tub — High-Heat, Conductive Formula

Permatex 31163 Copper Anti-Seize Lubricant is a heavy-duty, copper-based paste designed to prevent seizing, corrosion and galling in high-temperature metal assemblies.

Built for demanding automotive, industrial and maintenance environments, this 1 lb tub delivers a durable, conductive barrier where threaded or mated metal parts face heat, moisture and pressure. The formula combines copper solids with rust and corrosion inhibitors to reduce thread damage, ease disassembly and maintain electrical continuity in critical connections.

How does this copper anti-seize protect threaded parts under heat?

The copper solids in Permatex 31163 create a stable, heat-resistant film that separates metal surfaces and prevents cold welding and galling at elevated temperatures. It stays in place across a very wide temperature range, keeping fasteners serviceable after repeated heating cycles.

• Temperature performance from -30°F to 1800°F for high-heat applications.
• Copper particles form a barrier against metal-to-metal contact and friction.
• Fortified inhibitors slow rust and corrosion on exposed threads.

Where is this anti-seize typically used in vehicles and equipment?

This product is recommended for assemblies that see both heat and vibration, including exhaust systems, engine components and sensor fittings. It is also suitable for electrical connections where conductivity matters.

• Spark plug threads installed in aluminum—to ease removal and prevent thread damage.
• Exhaust manifold bolts and engine bolts exposed to extreme temperatures.
• Oxygen sensors, knock sensors, thermostat housings, and fuel fittings.

Does Permatex 31163 affect electrical conductivity or sensor operation?

The copper-based composition provides good electrical conductivity, making it appropriate for battery cable connections and sensor threads where a conductive interface is beneficial. It reduces the risk of poor contact while still protecting against corrosion.

• Maintains electrical continuity on battery terminals and cable connections.
• Safe for sensor threads when applied sparingly and per manufacturer guidance.
• Helps prevent galvanic corrosion at dissimilar metal joints.

How should I apply and store this anti-seize for best results?

Apply a thin, even coat to the threads or contact surfaces before assembly; avoid over-application that could contaminate nearby components. Store the tub tightly sealed in a cool, dry place to preserve consistency and inhibitor effectiveness.

• Use a brush or applicator to cover threads and mating surfaces evenly.
• Wipe away excess to prevent transfer to sensors or sealing surfaces.
• Keep container sealed and store at moderate temperatures away from direct sunlight.

Who is this for: Permatex 31163 is aimed at mechanics, DIY enthusiasts, fleet technicians and industrial maintenance crews who need reliable protection for high-temperature fasteners and conductive connections. Choose this 1 lb tub when you want a robust anti-seize that eases future disassembly, helps prevent corrosion and supports electrical contacts in automotive and equipment service tasks.