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DOWSIL™ 888 Silicone Joint Sealant

Effective for sealing transverse contraction and expansion joints, longitudinal, center line and shoulder joints in Portland Cement Concrete (PCC).

Uses:

  • New construction, repair or remedial applications

Benefits:

  • Can be extruded from -20 to 120°F.
  • May be used in joints that are not uniform in width.
  • Movement capability 100% extension and 50% compression.
  • Low modulus.
  • Weather and UV resistant.
  • Fuel resistant-short term exposure. Refer to Dow form number 62-207 for more information.
  • One component, cold applied, ready-to-use as supplied; dispensed directly from the bulk container into the joint by hand or with an air-powered pump.
  • Unprimed adhesion – primer is not required for bonding to Portland cement concrete. For optimum adhesion, the surface must be clean, dry and frost-free.
  • Cure time – typically, the sealant will have a skin-over time of one hour or less at standard conditions.

Properties

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

  • Adhesion to Yes No Concrete, Masonry
  • Appearance Yes No Opaque
  • Application Temperature Range Yes No -29 to 49 °C
  • Chemistry Yes No Neutral
  • Color Yes No Grey
  • Cure System Yes No 1-Part Cure
  • Durometer - Shore A Yes No 15 Shore A
  • Elongation Yes No > 1000 %
  • Flow Yes No NonSag
  • Full Adhesion Time Yes No 14 to 21 Days
  • Modulus @ 150% Elongation, maximum Yes No 28 psi
  • Movement Yes No Medium
  • Number of Parts Yes No One
  • Primerless Adhesion Yes No Primerless
  • Resistance Type Yes No Fuel Resistance, Jet Fuel Resistance, Ozone Resistance, Thermal Resistance, UV Resistance, Water Resistance
  • Room Temperature Cure - Days Yes No 7 to 14 Days
  • Shelf Life Yes No 360 Days
  • Specific Gravity @ 25°C Yes No 1.48
  • Substrate Yes No Porous
  • Tack-Free Time-50% RH Yes No 60 Minutes
  • Water Resistant Yes No true
  • Where Used Yes No Job Site

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DOWSIL™ 888 Silicone Joint Sealant
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CHOOSE

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DOWSIL™ 888 Silicone Joint Sealant
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