PERMATEX WATER PUMP & THERMOSTAT RTV SILICONE GASKET MAKER TUBE .5 OZ

When you're replacing a water pump or thermostat, getting a solid seal is critical to prevent coolant leaks. This Permatex RTV silicone gasket maker is formulated specifically for those jobs. It forms a flexible, durable gasket that stands up to the heat and vibration found in the engine bay, ensuring your new water pump or thermostat stays put and doesn't drip.

This isn't your average RTV. It's designed to resist the harsh chemicals found in coolant, like ethylene glycol, which can break down lesser sealants over time. The small tube size is handy for those smaller gasket surfaces, meaning you won't have a huge amount of leftover product. It cures into a rubber-like seal that can handle temperature changes without cracking or shrinking, which is exactly what you need around a water pump housing.

Make sure the surfaces are clean and dry before applying. This gasket maker is a popular choice for mechanics who want a reliable seal on these specific engine components.