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Hight Temperature Silicone 302 by NuFlex


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NuFlex® 302 General Purpose Silicone Sealant is a medium modulus one-component acetoxy cure, non-sag caulking material. NuFlex® 302 General Purpose Silicone Sealant cures to form a sturdy, rubbery solid upon exposure to moisture in the air. Due to its non-sag properties, the sealant can be applied overhead or on sidewall joints and surfaces without sagging, slumping, or running off. It adheres to most non-porous construction substrates.NuFlex® 302 has excellent resistance to weathering, vibration, moisture, ozone, and extreme temperatures. It may be applied in sub-zero temperatures without loss of extrusion or physical property characteristics and is effective to -46°C (-50°F)


  • Acetoxy cure
  • 100% silicone
  • NuFlex 302 has achieved GREENGUARD GOLD Certification
  • Certified by NSF
  • Water-resistant before, during, and after cure
  • RTV (Room Temperature Vulcanization)
  • Adheres to many substrates
  • Wide temperature range performance
  • 50-year durability
  • Can be applied in sub-zero temperatures

Bonds to:

  • Metal
  • Laminates
  • Glass
  • Wood
  • Silicone resin
  • Vulcanized silicone rubber
  • Ceramic
  • Natural and synthetic fibres
  • Painted surfaces
  • Most plastics

Basic uses include caulking and sealing around:

  • Form-in place gaskets where there is no oil contact
  • Duct joints
  • Areas that need weather stripping
  • Sinks, basins, showers, and tubs

Other uses include:

  • General repairs on a variety of substrates
  • Non-load-bearing bonding
  • Non-stick coating for concrete moulds and forms

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