Dirko™ HT Grey is the industry-standard, high-performance sealing compound. Designed for extreme conditions, this oxime-curing silicone remains permanently resilient, providing a professional-grade seal that withstands high heat, vibration, and chemical exposure.

Key Performance Features

• Permanently Elastic: Maintains a flexible seal that won’t crack or shrink under engine vibration.

• Solvent-Free: Safe for a wide range of materials and environmentally conscious.

• UV Resistant: Durable against sunlight and external environmental degradation.

• Extreme Temperature Range: Engineered to perform from -60 °C all the way up to +315 °C.

• Universal Application: A versatile “go-to” sealant for oil pans, valve covers, and water pumps.

Application & Use

Dirko HT Grey is ideal for sealing surfaces, gaps, and cracks in components that experience high thermal loads, including:

• Engine: Intake manifolds, oil pans, valve covers, and timing cases.

• Drivetrain: Gearbox housings and differential covers.

• Cooling System: Water pump housings and thermostat housings.

Pro Tip: For the best results, ensure the surface is clean, dry, and free of old gasket residue before application.