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NuFlex 319 Silicone Sealant - Clear

Original price $6.99 - Original price $6.99
Original price
$6.99 - $6.99
Current price $6.99

NuFlex® 319 Glazing Silicone Sealant is a one-part, high-modulus, non-corrosive, and moisture-curing 100% silicone sealant. Superior adhesion to most construction materials without primer. Cures to form a flexible, watertight bond to glass, plastic, metal, concrete and masonry, and factory- and field-installed metal building systems.


  • Primerless and non-corrosive with a non-offensive odor
  • All season gunnability from -37 °C to 60 °C (-38 °F to 140 °F)
  • Durable and unaffected by sunlight, rain, freeze/thaw conditions, ozone or airborne chemicals
  • Long life: cured sealant remains permanently flexible and will not shrink, crack, dry out or become brittle
  • 100% silicone
  • 100% RTV
  • 50-year durability
  • Excellent multipurpose neutral cure
  • Adheres to many porous substrates


  • NuFlex® 319 is a conventional glazing weather sealant used for sealing windows, doors, metal building flashings, eaves, troughs, and fittings. Also for use as the primary seal/bedding compound in factory-made windows.


Finish/Color Translucent
Optimal Adherence to Concrete, Glass, Plastic, Brick, Steel
Tack-Free / Skin Over Time 25 minutes
Recommended Use Interior, Exterior, Aluminum Windows, Vinyl/PVC Windows, Glass
Base 100% RTV Silicone
Features Neutral Cure
Tooling Time 4 to 8 minutes