Loctite Copper Anti-Seize Lubricant LB 8008 C5-A 4 fl oz Brush-Top — -20°F to 1800°F Heat & Corrosion Protection

Loctite LB 8008 C5-A Copper Anti-Seize is a copper-and-graphite fortified lubricant that prevents rust, corrosion, galling and seizure on threaded and mated metal parts across a wide temperature range up to 1800°F.

This brush-top 4 fl. oz. can contains a heavy-duty grease that suspends copper and graphite solids for durable protection where metals meet. The formulation is designed to improve assembly and disassembly of fasteners, studs, bolts and flanges by establishing a stable lubricating film that resists chemical attack and extreme heat. With a lower temperature rating down to -20°F, it works in both cold starts and high-temperature operating environments.

How does this anti-seize protect metal parts during high heat?

Loctite's copper particles form a sacrificial barrier between mating surfaces while graphite adds solid-film lubricity. That combination prevents direct metal-to-metal contact, cutting friction and reducing the likelihood of galling or cold welding under thermal cycling.

• Temperature range rated from -20°F to 1800°F for broad application scope.
• Copper and graphite solids create a stable, conductive film at extreme temperatures.
• Resists oxidation and preserves clamp load under heat stress.

What parts and situations is LB 8008 best used on?

This anti-seize is formulated for threaded connections, flanges, spark plug boots, exhaust components, and any bolted assemblies exposed to heat or corrosive conditions. It’s especially suitable where disassembly ease is critical after long service life or heavy thermal exposure.

• Exhaust systems, manifolds and headers where temperatures spike repeatedly.
• Large industrial bolts, studs and heat-exposed flanges.
• Sensors, fittings and fasteners that require reliable torque and future removal.

How do I apply the brush-top anti-seize correctly?

The built-in brush cap enables controlled, even coverage of threads and contact faces. Apply a thin, continuous coating to mating surfaces; avoid heavy globbing, which can alter torque readings. Reapply if the part is cleaned, stripped or after prolonged service.

• Shake can well before use to re-suspend solids evenly.
• Brush a light coat onto male threads and contact faces; cover length of engagement.
• Wipe excess to maintain accurate torque and prevent contamination of adjacent parts.

Will this product affect torque values or electrical conductivity?

A light, consistent film minimizes impact on torque but can slightly alter readings compared with dry threads; account for that during assembly. Because it contains metal solids, the coating remains conductive, which can be beneficial or require consideration around electrical contacts.

• Expect modest torque variance—use calibrated tools when precision is needed.
• Copper solids maintain some conductivity; avoid use where insulation is required.
• Wipe contact areas if insulation is necessary before final assembly.

Who is this for: Loctite LB 8008 C5-A Copper Anti-Seize is suited for mechanics, maintenance technicians, fabricators and anyone assembling or disassembling equipment exposed to high temperatures or corrosive environments. It’s a practical choice for automotive exhaust work, industrial bolting, HVAC service, and routine maintenance tasks where long-term corrosion prevention and easier future disassembly are priorities. The 4 fl. oz. brush-top can offers controlled application for small to medium jobs and for trial before specifying larger quantities for fleets or production facilities.

Features at a glance:

• Size: 4 fl. oz. brush-top can for precision application.
• Color: copper-colored grease with mild odor for workshop use.
• Formulation: copper and graphite suspended in high-quality grease to protect up to 1800°F and down to -20°F.