DOWSIL™ 791 Silicone Weatherproofing Sealant

DOWSIL™ 791 Silicone Weatherproofing Sealant

DOWSIL™ 791 Silicone Weatherproofing Sealant is a one-part, medium-modulus, elastomeric sealant designed for general weathersealing. It is a silicone formulation that cures to a flexible and curable silicone rubber building joint seal.


  •  DOWSIL™ 791 Silicone Weatherproofing Sealant is a specified, premium
    performance weather sealing product specifically designed for general glazing and
    weather sealing in curtain wall and building facades.



  • Ideal for expansion, connection,perimeter and other movement joints
  • Neutral cure – suitable for use on coated glass, galvanized steel, masonry and other porous and nonporous substrates
  • Extension/compression movement capability of up to ±50 percent of theoriginal joint width


  • Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone.
  • Excellent unprimed adhesion to a wide variety of construction materials and building components.
  • Ease of application – ready to use as supplied
  • Excellent rheology, low string upon gunning



Dow Corning 791 Silicone Weather
proofing Sealant is a one-part, neutralcure,
architectural grade sealant. It
easily extrudes in any weather and
cures at ambient temperature by
reaction with moisture in the air to
form a durable, flexible silicone rubber

Additional Info

  • Thickness (inches): N/A
  • Adhesive Type: Silicone
  • Material Type: Silicone Caulk
  • Density: N/A
  • Colors: Black, Gray, White, Bronze
  • Market: Facade
  • Cell Type: N/A
  • Liner: N/A
  • Adhesive Coating Options: N/A
  • Custom Colors: No
  • Custom Thickness: N/A
  • Custom Width (inches): N/A
  • Minimum Width (inches): N/A
  • Maximum Width (inches): N/A
  • Standard Length (feet): N/A

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or, call us at 800.850.3338