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Hi temp silicone sealant

Do not use in direct contact with fuels such as gasoline or diesel fuel!

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Technical Manual

10.1 Fluid Ounce Hi-Temp Silicone Sealant -85 To 500 Degrees

Price in points: 1695 points
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NuFlex 302 Hi-Temperature Silicone Sealant is a one-part non-slumping product with a paste-like consistency. This high performance sealant is able to withstand operating temperatures ranging from -85° to 500°F, and up to 600°F under intermittent exposure. When it is exposed to moisture in the air, it will form a tough rubbery seal for undeniably tough protection! NuFlex 302 Hi-Temp is oxygen sensor safe and perfect for use with a number of bonding applications and materials that undergo high temperatures. Available in your choice of red or black to match your working surface.

PLEASE NOTE: This product cannot be used in direct contact with gasoline or diesel fuel! 

Suitable for sealing and encapsulating the following: heating elements in appliances, gaskets, moving oven belts, industrial ovens, bag filters on smoke stacks, and other features that perform at high temperatures and vibration (including automobiles, boats, small engines, rocker covers, timing chains, and more). 

Meets the following specifications: 

  • MIL-A-46106A
  • USDA & AC approved
  • Amendment 2, Type 1
  • Preparation:

    • ​Please be sure to wear rubber gloves and eye protection during application of this product. Protect your work area from accidental spills with a tarp or drop cloth. Thoroughly remove all debris and foreign matter from the surface to be bonded.

  • To use:
    • Insert cartridge in the caulking gun and cut the tip at an angle to desired diameter (1/8"). Lay a bead and drag the material at a 45° angle in desired area. Follow package directions regarding curing/setting times.
Size: 10.1 fl.oz (300 mL) cartridge
Color: Red or Black
Material: High temperature silicone
Temperature Rating: 600°F (316°C)
Features & Benefits:
  • NSF approved.
  • 100% silicone, 100% RTV (Room Temperature Vulcanization).
  • Multi-use formual adheres to a wide variety of substrate surfaces.
  • Withstands temperatures up to 600°F (316°C).
  • Quick curing and permanently flexible.
  • Moisture, heat and vibration resistant.




How to caulk like  pro!Silicone & Caulking Tips: DiY like a Pro!

  1. Product cartridge fits into a standard caulking gun. For clean application, cut the cartridge tip near the end, at an approximate 45° angle.
  2. Ensure that the working surface is clean, dry, and free of debris. Have some damp cloths or a roll of paper towels within reach. Lay down newspaper to protect carpet/flooring from possible drips.
  3. To lay a professional bead, hold the caulking gun at 45°. Spin the cartridge tube so the longest part of your tip is aligned with the top side of the caulking gun.
  4. Beginning at the highest point of your working area, slowly and gently squeeze the trigger and drag the gun to lay an even bead (about 1/8"). 
  5. For a clean job, remember that "A little goes a long way!" Try to be consistent when laying a bead - you can always go back and add more material later.
  6. As you near the end of the working area, release the trigger (or press the release lever) to stop the flow of material.
  7. After applying the material, let it cure for the indicated amount of time (at room temperature) before using your appliance.


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Last updated on August 23rd 2017.