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DOWSIL™ Smoke Seal 800SL

This self-leveling, one-part silicone sealant has excellent unprimed adhesion to many common, non-porous building substrates. A low-modulus sealant, with high adhesive strength and movement capability it has excellent fire resistant properties, which can help prevent the spread of smoke and flames in horizontal floor joints.

Uses:

  • Sealing connection joints in fire-rated floors and gaps between fire rated walls and concrete floors
  • Horizontal sealing where smoke tightness is important

Benefits:

  • Up to four-hour fire rating 
  • Ready to apply
  • No tooling required 
  • Cures at room temperature when exposed to moisture in the air 
  • Long service life 
  • Excellent weathering characteristics, including resistance to ozone, UV and high temperatures 
  • Non-corrosive to metals
  • Tested and classified according to: EN 1366-4 and 13501-2 (joint design details on request)
  • Tested and classified according to EN 11925 and EN 13510-1
    Tested according to EN 1716, UL 2079 and EN 15651-4 

Properties

These values are not intended for use in preparing specifications.

Typical Properties

  • Appearance Yes No Black
  • Certification Yes No Material
  • Chemistry Yes No Neutral
  • Density Yes No 1.3 grams per cc
  • Durometer - Shore A Yes No 19 Shore A
  • Elongation Yes No 400 %
  • Modulus @100% Elongation, maximum Yes No 52.2 psi
  • Movement Yes No High
  • Shelf Life Yes No 365 Days
  • Special Features Yes No Fire Resistance, High Temperature Resistance
  • Substrate Yes No Non-porous, Porous
  • Tensile Strength Yes No 174 psi
  • Type Yes No Sealant
  • Viscosity Yes No 28000 mPa.s
  • Where Used Yes No Job Site
Illustration of DOWSIL™ Smoke Seal 800SL

Fire-rated Sealants

How can we limit the spread of fire when it comes to building design? Including passive fire-protection in a building design helps contain fire and smoke, allowing more time for building occupants to escape. This is why building materials we select are so vital: the materials’ behavior in resisting fire is a key factor in determining how much time will be available to exit a building. Dow High Performance Building offers a range of DOWSIL™ brand solutions for vertical and horizontal applications as well as cable penetrations, fenestrations and building element connections, including DOWSIL™ Smoke Seal 800SL.

A distinct advantage

Sealants can help limit the spread of fire and smoke in passive, fire-protective building designs. Silicone technologies are non-flame propagating, do not produce flaming droplets and have a limited non-toxic smoke development. These material properties can be especially beneficial in fire-rated systems and designs and are found in DOWSIL™ Smoke Seal 800SL, developed for joints in floors and the gap between walls and floors. This product has a fire rating of up to four hours and benefits from the renowned characteristics of silicone sealants, such as movement capability, adhesion profile, UV and temperature stability and durability.

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DOWSIL™ Smoke Seal 800SL
No Technical Data Sheets are available online for this material.
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CHOOSE

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DOWSIL™ Smoke Seal 800SL
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