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DOWSIL™ 335 Butyl Sealant

A New Primary Sealant for the Production of Insulating Glass Units

One Color, One Edge for High Performance Glazing Systems

New to the market, homogenous appearance and improved aesthetics at the glass edge through color matched Butyl Sealant: DOWSIL™ Butyl Sealant Special Black is a heat applied, polyisobutylene which is suitable for use as the primary seal in both air and gas-filled double and triple insulating glass units in residential and commercial projects which is color matched with DOWSIL™ 3362 Insulating Glass Sealant, DOWSIL™ 3363 Insulating Glass Sealant and DOWSIL™ 993 Structural Glazing Sealant.

Ideal for use in glass assembly using both standard and warm-edge spacers, DOWSIL™ 335 Butyl Sealant fully complies with EN 1279 part 2, 3 and 4 .

DOWSIL™ 335 Butyl Sealant is also fully compatible with neutral DOWSIL™ façade silicones.

What is new?

DOWSIL™ 335 Butyl Sealant is available in a choice of colors: DOWSIL™ 335 Butyl Sealant BLACK and DOWSIL™ 335 Butyl Sealant SPECIAL BLACK. Special black offers the following additional benefits:

  • Low risk of butyl flow due to high temperature resistance of up to 95-100°C
  • Ideally suited for use in warmer climates
  • Color matched to DOWSIL™ 3362 Insulating Glass and DOWSIL™ 3363 Insulating Glass and DOWSIL™ 993 Structural Glazing Sealant Secondary Sealants to offer a homogenous appearance and improved aesthetics at the glass edge

See the difference:

Insulating glass units sealed Dowsil 335 Butyl Sealant Standard Black (left) and Special Black.

Quick Links

DOWSIL™ 3364 Warm Edge Sealant
Optimize the Performance of Glass Facades

Learn More