J-B Weld Hi-Temp Silicone Gasket Maker & Sealant, Red, 85g
High-temp silicone gasket maker resistant to 343°C. Ideal for automotive and mechanical seals. 85g tube.
The J-B Weld Hi-Temp Silicone Gasket Maker & Sealant is a high-performance RTV (Room Temperature Vulcanized) silicone ideal for creating robust seals in mechanical assemblies exposed to extreme heat. This 85g red sealant cures upon exposure to atmospheric moisture, forming a durable, waterproof bond on most surfaces without shrinking or cracking.
Engineered to withstand continuous temperatures up to 287°C (550°F) or intermittent heat up to 343°C (650°F), it excels in high-stress automotive and industrial applications. Its sensor-safe formulation ensures compatibility with oxygen sensors, while its resistance to weathering makes it suitable for both indoor and outdoor use.
Key Features
- High-temperature resistance (up to 343°C intermittently)
- Forms a waterproof, flexible seal
- No shrinkage or cracking after curing
- Resistant to weathering and vibration
- Sensor-safe for automotive applications
This versatile sealant adheres to metals, plastics, and rubbers, making it indispensable for gasket repairs, exhaust systems, and engine components. Reliable under pressure, it’s a must-have for DIY enthusiasts and professionals alike.
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Technical Specifications
- Shipped within 0-2 business days
- Shipping to United States: 3-5 business days*
- Free Shipping Included
- Automotive gasket repairs
- Exhaust system sealing
- Engine component assembly
- High-temperature mechanical joints
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- Type: RTV Silicone
- Colour: Red
- Weight: 85g
- Temperature Resistance: 287°C (550°F) continuous, 343°C (650°F) intermittent
- Properties: Waterproof, flexible, non-shrinking
- Applications: Automotive, mechanical assemblies
- Sensor-Safe: Yes
- Shipping Weight: 109g
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