The most reliable heat resistant sealant

The most reliable heat resistant sealant

DOWSIL™ 736 Heat Resistant Sealant is a one-part, non-slumping paste that cures to a rubbery solid at room temperature on exposure to water vapor in the air. This silicone product is formulated to perform at temperatures ranging from -65 to 260°C (-85 to 500°F) for continuous operation and to 315°C (600°F) for intermittent exposure. DOWSIL™ 736 comes ready to use and flows readily from its container in a paste-like consistency making it easy to work with. It is recommended for appliances, industrial ovens, aerospace gaskets, moving oven belts, or other critical bonding and sealing applications that are exposed to high temperatures.


  • Will not sag or run
  • May be applied overhead or on sidewalls
  • May be used in applications with continuous exposure to 260ºC (500ºF) and intermittent exposure to 315ºC (600ºF)


  • Sealing and encapsulating heating elements in appliances
  • Aerospace gasketing
  • Moving oven belts
  • Industrial ovens
  • Bag filters on smokestacks
  • Other critical bonding, sealing, potting, encapsulating, and protective coatings where parts must perform at high temperatures

Call 270-765-2212 or email orders@LentusLLC.com to order DOWSIL™ 736 from Lentus.

Get in touch