SILICONE DOWSIL™ 688 Glazing and Cladding Sealant



Black, Clear, Grey, White


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One-part neutral cure silicone sealant designed for a wide range of glazing, weather sealing and professional caulking applications. It will bond to form a strong weatherproof seal on most common building materials.


  • Adheres to a wide range of building materials and finishes
  • Neutral cure; will not corrode galvanized/zinc-coated steel or attack concrete
  • Excellent resistance to weathering, ultra-violet radiation, vibration, moisture, ozone, temperature extremes, airborne pollutants, cleaning detergents and many solvents
  • Long life reliability
  • Meets International Standards such as CNS 8903, BS 5889, BS EN ISO11600 20LM
  • Strong elastic seal capable of withstanding movements up to ± 25% of original joint width
  • Non-slumping; can be used in vertical and overhead joints
  • Easy to use, one part, no mixing required
  • Can be applied in any season
  • Good weatherability, it is virtually unaffected by sunlight, rain, snow, ozone or temperature extremes
  • Bonds to most common construction materials without use of primer
  • Excellent recovery from extension and compression

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Black, Clear, Grey, White

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