3M 1003SL Fire Barrier Water Tight Silicone Sealant, Gray, 10.1 Oz

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Self-leveling, ready-to-use, single component, neutral cure, elastomeric silicone firestop that also acts as a barrier to water leakage and airborne sound transmission. Helps minimize sound transfer.
SKU: 41709942
MFG: 1003SL
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SL Series- Self leveling will slump, uniform. Ready to use with a standard or bulk caulking gun or pneumatic pumping equipment. Cures in 20-40 minutes. Used to firestop openings and penetrations on fire rated floor stabs, walls, other building partitions and assemblies. Helps control the spread of fire, smoke and noxious gases. Meets ASTM Specification C920, Type S, Grade P, Class 25.


  • Color: Light Gray
  • 10.1 Oz Cartridge
  • Excellent adhesion
  • Self-leveling, Halogen-free formula
  • Helps minimize sound transfer.
  • 15% Compression and Extension
  • Re-enterable / Repairable
  • Excellent Weatherability Cures Upon Exposure to Atmospheric Humidity
  • Applied with Standard or Bulk Caulking Guns or Pneumatic Pumping Equipment
  • Perimeter Fire Barrier Tested up to 3 hours in accordance with ASTM E 2307
  • Firestop tested up to 3 hours in accordance with ASTM E 814 (UL 1479) &CAN/ULC S115
  • Fire Resistance tested for construction joint systems in accordance with ASTM E 1966 (UL 2079)
  • Meets UL Water Leakage Test, W Rating - Class 1 requirements
  • Compatible for use with CPVC piping
  • Applied with conventional caulking equipment (excellent caulk rate)
  • Excellent weatherability during construction
  • Re-enterable or repairable


MFR: 1003SL
SKU: 41709942
UPC: 051115115387
Brand: 3M
Weight: 2.0 lb