Universal Black Colour RTV Silicone High Temperature Gasket Maker for Temperatures up to 343 C/650 F (85g)

Universal Black Colour RTV Silicone High Temperature Gasket Maker (85g) is a room‑temperature vulcanising silicone sealant designed to form flexible, oil‑resistant gaskets that withstand continuous high temperatures up to around 343 °C (650 °F). Supplied in an 85 g tube, it is ideal for automotive, industrial, and household applications where a durable, sensor-safe, leak-proof seal is required in high-heat environments.​

Key features

• Black RTV silicone gasket maker formulated for high‑temperature applications up to approximately 343 °C (650 °F), suitable for engines, exhaust components and other hot-running parts.​
• Form a tough, flexible, waterproof gasket that resists oil, coolant, transmission fluid and other common automotive and workshop fluids.​
• The room-temperature vulcanising (RTV) formula cures with moisture in the air, which allows for the creation of custom-shaped gaskets directly on metal surfaces.​
• Typically, an oxygen sensor is safe when fully cured, making it suitable for use in many modern engine bays where electronic sensors are present.​
• The 85 g tube size allows for convenient storage in toolboxes and is ideal for both DIY users and professionals who need a versatile high-temperature gasket and sealing solution.

This Universal Black Colour RTV Silicone High Temperature Gasket Maker (85g) is engineered for demanding sealing jobs where standard sealants cannot cope with the heat, delivering reliable performance at temperatures up to 343 °C (650 °F). The oil-resistant, flexible silicone formula is perfect for forming or replacing gaskets on rocker covers, timing covers, sumps, thermostat housings, and other components exposed to heat, vibration, and fluids.​

The easy‑to‑use 85 g tube allows precise application directly onto cleaned metal surfaces, creating a custom, leak‑proof gasket once cured, without the need for pre‑cut gasket material. Suitable for automotive, motorcycle, marine and general workshop use, this high‑temperature black RTV gasket maker is an excellent all‑round choice when a durable, long‑lasting seal is required under extreme conditions.

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