Skip to content Skip to navigation menu

PERMATEX Permatex® Ultra Copper® Maximum Temperature RTV Silicone Gasket Maker

Model # 304800Mfg # 81878


Customer Reviews
In stock online.

Product Description

The most advanced, high temp RTV silicone gasket available.

OEM specified. Highest operating temperatures for 4-cylinder, turbocharged or high-performance engines.  Sensor-safe, low odor, noncorrosive. Superior adhesion. Three times more oil resistant than conventional silicones; eight times more flexible than cut gaskets. Temperature range -75°F to 700°F (-59°C to 371°C) intermittent; resists auto and shop fluids and vibration.

Suggested Applications:

Exhaust manifolds/ headers, valve covers, oil pans, timing covers, water pumps, thermostat housings

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.