Loctite® Superflex® SpeedSeal™ Silicone Sealant

Loctite® Superflex® SpeedSealTM is a 1-component, fast-dry RTV silicone that withstands water contact just 2 hours after application. This 100% silicone rubber sealant replaces traditional sealants that require a minimum 24 hours prior to water exposure. Resistant to mold and mildew, this product features a flexible, watertight seal that provides a time-saving, back-in-service option.

  • 100% silicone formulation – no fillers
  • Withstands water contact within 2 hours of application
  • Creates a watertight, mold- and mildew-resistant seal
  • A “0” antimicrobial rating as tested per EN ISO 846 
  • Withstands temperature extremes of -30°F to 250°F
  • Highly resistant to ultraviolet light and other environmental elements
  • Applications:

    Forms a weatherproof bond to materials like glass, ceramic, aluminum, primed steel and some plastics. Typical applications include:

    • Sealing bathtubs, sinks, fixtures, showers, etc.
    • Applications where mildew is problematic


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    Loctite Superflex SpeedSeal Sell Sheet

    Loctite® Superflex® SpeedSeal Silicone Sealant is not only water-resistant but also twelve times faster than traditional sealants.

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