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Fire Barrier Sealant FD 150+ Limestone

Product #: 3MAFD150R10.1OZ

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Ideal Uses
  • Firestopped for Combos
  • Firestops Construction Joints at the Wall-to-Wall
  • Firestops Construction Joints at the Head-of-Wall
  • Firestops Construction Joints at the Bottom-of-Wall
  • Firestopped for Power Cables
  • Firestopped for Non-Metallic Pipe (excluding CPVC)
  • Firestopped for Metallic Pipe
  • Firestopped for Insulated Pipe
  • Firestopped for HVAC Duct Penetrations
  • Firestopped for Conduit Cables
  • Firestopped for Communication Cables
  • Helps Minimize Noise Transfer
The 3M Fire Barrier Sealant FD 150+ Limestone is a ready-to-use, gun-grade latex-based elastomeric sealant. It cures upon exposure to form a solid flexible firestop seal.


When properly installed, this sealant helps prevent the spread of fire, smoke, and noxious gas.

This product provides up to 4-hour fire protection in tested and listed systems (when properly installed). You can apply this sealant on firestops construction joints and through penetrations.

It remains elastomeric (compression/extension capability of ± 19%) and exhibits excellent adhesion to a full range of construction substrates.


The sealant is firestop tested up to 3 hours in accordance with ASTM E 814 (UL 1479) & CAN/ULC S115. Its Fire Resistive Joint System tested up to 4 hours in accordance with ASTM E 1966 (UL 2079)

In addition, this product acts as an acoustic barrier by minimizing noise transfer (STC-Rating of 56 when tested in a STC 56-rated wall assembly), helps create a smoke seal for systems requiring the optional L-Rating, meets the intent of LEED® VOC environmental regulations, and meets International Building Code (IBC) and other key life safety building code requirements.

The following are features of the sealant:
  • Helps Minimize Noise Transfer
  • Applied with Conventional Caulking Equipment (excellent caulk rate)
  • Halogen-Free
  • Sag-Resistant
  • Excellent Adhesion
  • Paintable
  • Re-enterable/Repairable

You can use the sealant for the following applications:
  • Firestops construction joints at the bottom-of-wall, head-of-wall and wall-to-wall
  • Typical through penetrations firestopped for metallic pipe, non-metallic pipe (excluding CPVC), insulated pipe, conduit, power and communication cables, combos, insulated pipe, and HVAC duct penetrations

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Fire Barrier Sealant FD 150+ Limestone

Fire Barrier Sealant FD 150+ Limestone

Prevents the spread of fire, smoke & noxious gas - Cures upon exposure - Remains elastomeric - Has excellent adhesion