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DOWSIL™ 994 Ultra Fast Bonding Base and Catalyst

A fast curing, two-component, neutral silicone formulation specifically developed for automated window bonding applications where a fast and durable bond between glass and window frame is required.


Residential and commercial:

  • Bonding of windows and doors
  • Specific structural glazing configurations
  • Solar thermal bonding
  • Bonding of internal partitions


  • Shorter cycle time versus standard structural glazing and bonding silicones
  • Ultra-fast curing system which is ideally suited to continuous and automated processing
  • Strong chemical adhesion
Continuous Production Processing

DOWSIL™ 994 Ultra Fast Bonding Sealant is designed for use in a range of glass-to-plastic and glass-to-metal bonding applications where fast cure and high strength are desired. This next generation silicone can facilitate significant improvement in the speed of productivity and cost effectiveness in a variety of glass designs in both manual and automated processing.

DOWSIL™ 994 Ultra Fast Bonding Sealant – Black has attained European Technical Assessment 18/0571 and meets the European Standards for Structural Glazing ETAG 002.

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These values are typical properties and are not intended for use in preparing specifications.

  • Adhesion to Glass, Aluminum, Vinyl/PVC-U, Wood
  • Color - Part A White
  • Color - Part B Black
  • Cure Type Neutral Cure, Alkoxy Cure
  • Durometer - Shore A 40 Shore A
  • Elongation > 300 %
  • Low Odor true
  • Number of Parts Two
  • Primerless Adhesion Primerless
  • Resistance Type UV Resistance
  • Service Temperature High 150 °C
  • Service Temperature Low -50 °C
  • Tack-Free Time-50% RH 5 to 18 Minutes
  • Tear Strength 114 ppi
  • Tensile Strength > 261.068 psi
  • Working Time 3 to 10 Minutes

No Safety Data Sheets are available online for this material
Please Contact Dow for additional information.

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DOWSIL™ 994 Ultra Fast Bonding Base and Catalyst
No Technical Data Sheets are available for this product
Please Contact Dow for additional information.

DOWSIL™ 994 Ultra Fast Bonding Base and Catalyst

No Regulatory Data Sheets are available for this product

DOWSIL™ 994 Ultra Fast Bonding Base and Catalyst
Please Contact Dow for distribution options available for this product.