Silicone Sealants

• Heat resistance (up to 500°F)
• Low temperature flexibility (down to -75°F)
• Elasticity
• Vibration resistance
• UV stability

One-Part Systems vs. Two-Part Systems

One-Part Silicone Sealant

Two-Part Silicone Sealant

Cure Technologies for Silicone Sealants

• Condensation cure relies upon atmospheric moisture to catalyze the curing reaction and a byproduct is volatilized as the reaction proceeds.
  
  
• Addition cure is not reliant upon atmospheric moisture and does not generate any byproducts. The addition cure produces virtually no shrinkage. For these reasons, the addition cure is preferred for molded applications. A drawback of the addition cure is its susceptibility to cure inhibition.
  

Silicone Sealant Standard Packaging

One-Part Products

• 2.8 fluid ounce tube
• 10.1 fluid ounce cartridge
• 5 gallon pail
• 55 gallon drum

Two-Part Products

• Pint kit
• Gallon kit
• 5 gallon pail kit
• 55 gallon drum kit

Popular Momentive Silicone Sealant Grades

• Room temperature cure
• Excellent heat resistance (up to 500°F)
• Excellent low temperature flexibility (down to -75°F)
• Good elasticity, vibration resistance, and mechanical compliance
  for effective sealing
• Outstanding UV stability and weather resistance

• General sealing for:
  • Vehicles
  • Outdoor signs
  • Enclosures
• Sealing and bonding for:
  • Vehicles
  • Signs
• Gasketing including formed-in-place gaskets
• Electrical insulation
• Potting and encapsulation of electronic components, circuit boards
  and optical equipment
• Electronic component assembly
• Fabrication of rubber components
• Conveyor belting
• Rubber rollers
• Urethane, epoxy and plaster molding for art, architecture, furniture
  and prototyping
• Protective coatings