Sealant Designed for Import Engines - Grey 999 RTV Silicone Gasket Maker is a high-performance, neutral-cure sealant formulated specifically for import engines and precision parts. With a temperature rating up to 650°F (343°C) and oxygen sensor-safe formulation, it delivers durable, leak-proof performance with low odor and non-corrosive curing, ideal for modern engine components and shop environments.

Oxygen Sensor Safe

Non-corrosive formula will not interfere with oxygen sensors, catalytic converters, or emission systems, perfect for today’s advanced engines.

Neutral Cure, Low Odor

Cures without releasing strong acids or odors, making it ideal for sensitive electronic components and enclosed workspaces.

Effective Up to 650°F (343°C)

Performs reliably in high-temperature environments such as turbochargers, valve covers, and oil pans.

Designed Specifically for Import Engines

Engineered to meet the precise sealing demands of Japanese and European vehicle manufacturers.

Flexible & Durable Seal

Cures into a tough, yet flexible gasket that withstands vibration, pressure, and thermal expansion without cracking or shrinking.

Adheres to Most Engine Materials

Bonds well with aluminum, steel, and other metal surfaces commonly found in import engine assemblies.