HTV and RTV Silicone Rubber | JCT Machinery

January 11, 2024

1. Vulcanization Temperature
HTV Silicone Rubber: Requires high-temperature vulcanization, typically above 150℃. The curing process involves heat activation, and it often requires a more controlled and elevated temperature environment.
RTV Silicone Rubber: Cures at room temperature or at slightly elevated temperatures, typically between 20℃ to 150℃. The curing process is initiated by moisture in the air, and no additional heat is typically required.
2. Heat Resistance
HTV Silicone Rubber: Exhibits excellent heat resistance due to the high-temperature curing process. It can withstand higher temperatures compared to RTV silicone rubber.
RTV Silicone Rubber: Generally has good heat resistance, but it may not be as high as that of HTV silicone rubber.
3. Applications
HTV Silicone Rubber: Commonly used in applications where high-temperature resistance is crucial, such as automotive gaskets, industrial seals and components exposed to elevated temperatures.
RTV Silicone Rubber: Widely used in various applications where ease of use, flexibility, and lower curing temperatures are important. Common applications include mold making, casting, potting, sealing and bonding.
4. Processing
HTV Silicone Rubber: Requires specialized equipment and processes due to the high-emperature curing.
RTV Silicone Rubber: It can be applied and cured at room temperature without the need for special equipment.

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