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Dow Corning - DOWSIL 736 Heat Resistant Sealant

Brand: VENOM

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DOWSIL™ 736 Heat Resistant Sealant is a high-temperature, one-part silicone sealant specifically formulated to withstand extreme heat exposure. It is commonly used in industrial, automotive, and appliance applications where elevated temperatures are a regular factor.



Key Features
 
 High heat resistance:
  * Withstands continuous temperatures up to 260°C (500°F)
  * Resists short-term exposure up to 315°C (600°F)

 One-part RTV silicone : Cures at room temperature with moisture in the air

 Non-slump paste : Stays in place on vertical or overhead surfaces

 Excellent adhesion : Bonds to metals, ceramics, glass, and some plastics

 UL 94 HB flame rating

 Flexible and durable after curing

 Red oxide color : Visibly identifies high-temp applications



 Typical Technical Properties

 Property    Value
 Cure Type    Acetoxy (moisture cure)
 Tack-free time   ~20 minutes (at 25°C, 50% RH)
 Full Cure 24–72 hours (varies with depth and conditions)
 Color  Red oxide
 Durometer Hardness (Shore A)  ~30
 Elongation at Break ~400%
 Tensile Strength   ~2 MPa (290 psi)
 Thermal Conductivity   ~0.35 W/mK
 Dielectric Strength     ~16 kV/mm
 Operating Temp Range   -60°C to +260°C
 
 
 Applications
 
 * Gasketing and sealing in ovens, heaters, furnaces, and boilers

 * Automotive exhaust and engine compartments

 * Appliance assembly (toaster ovens, dryers, etc.)

 * Industrial ducting, chimneys, and flue systems

 * Mechanical and electrical enclosures exposed to high heat




Available Packaging
 
 * 300 mL cartridge

 * 100 mL tube

 * 5-gallon pail

 * 55-gallon drum (bulk/industrial)




Handling & Safety
 
 * Acetoxy cure releases acetic acid during curing – use in ventilated areas

 * Avoid contact with eyes and skin before curing

 * Clean surfaces of oil/dust before application

 * Store below 30°C (86°F), keep sealed until use

 * Refer to Safety Data Sheet (SDS) for full safety instructions