3M Fire Barrier Sealant IC 15 WB+
Establish a Strong Firestop Barrier
Designed to prevent the spread of fire, smoke and noxious gas, 3M™ Fire Barrier Sealant IC 15WB+ is a one-part, gun-grade, latex-based, intumescent firestop sealant. This firestop sealant provides up to 3-hour fire protection in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115. In addition, this product is fire resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079). This sealant has been formulated to form a monolithic firestop seal that also helps minimize sound transfer, acting as a barrier to airborne sound transmission (STC-Rating of 54 when tested in a STC 54-rated wall assembly).
- Description
- Downloads
- Applications
- Specifications
Description
- Firestop tested for through penetration applications for up to 3 hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115
- Sealant designed to help minimize sound transfer
- Firestop sealant is compatible with CPVC piping
- Water-based and paintable sealant provides easy application and clean-up
- Exceptional adhesion for long-term performance
- Applied with conventional caulking equipment with excellent caulk rate
- Sag-resistant properties offer clean application as well as strong adhesion
- Sealant is re-enterable and repairable
- Fire resistance tested for static construction joint systems in accordance with ASTM E 1966 (UL 2079)
Download the MSDS PDF: MSDS
Recommended Applications
- HVAC ducts and vents
- Metallic and non-metallic, including CPVC pipes
- Blank openings
- Single and bundled cables
- Insulated pipe
- Pipe and cable through-Penetrations
- Busways
- Combos
- Rated wall, floor and floor-ceiling assemblies
- Static construction joints

Related Products
-
Read MoreQuick ViewSpecSeal Cast In Place Device
Eliminate core-drilling and firestop after the concrete pour with SpecSeal CID Cast-In Firestop Devices. SpecSeal Cast-In Devices are a sleeve, concrete form and firestop rolled into a single device. SpecSeal Cast-In Devices are available in a range of sizes and heights to accommodate penetrant up to 6″ Trade Size penetrants and concrete depths of up to 36″.
-
Read MoreQuick ViewSpecSeal LCI300 Sealant
SpecSeal® LCI Sealant is a versatile and economical intumescent sealant that has excellent caulking properties as well as high build properties on vertical or overhead surfaces. This single component sealant may be caulked (standard cartridge or bulk loaded), knifed or troweled. In addition, SpecSeal® LCI Sealant does not contain PCB’s or asbestos.
SpecSeal® LCI Sealant is storage stable (when stored according to the manufacturer’s recommendations), and will not separate or shrink when dried (when applied according to the manufacturer's recommendations). SpecSeal® LCI Sealant will adhere to all common construction and penetrant materials and contains no solvents that might adversely effect plastic pipes or cable jackets. -
Read MoreQuick ViewSpecSeal SSB Firestop Pillows
SpecSeal SSB Firestop Pillows consist of a mineral fiber core material sealed with a water-resistant intumescent membrane. This coated core material is then heat-sealed in a tough, nonirritating, fireretardant poly bag. They easily compress and conform around any penetrant. Equally suited for new or existing conditions, SpecSeal Pillows make short work of even the most complex through-penetration firestop conditions.
-
STI BIOSTOP 1-1/2″ Fire Rated Pipe Collar
Pipe Collars are prefabricated for open and closed through-penetration firestop systems using 1 1/2″(38 mm) to 6″ (152 mm) plastic pipe. An easy locking tab assures easy installation. The collar design greatly reduces the time and expense that is required to install competitive collars.
-
Read MoreQuick ViewSpecSeal SSS Sealant
SSS Intumescent Firestop Sealant
SpecSeal SSS Firestop Sealant is a premium grade water-based Intumescent firestop sealant. SpecSeal SSS Sealant incorporates a proprietary two-stage intumescent technology making it the go to choice for any combustible or non-combustible penetrants. As little as a 1/2″ applied depth of SSS Sealant is required to provide up to a 4 Hr Fire resistance rating when tested to ASTM E814/UL 1479. -
Read MoreQuick ViewSpecSeal Silicone Joint Sealant
SpecSeal® SIL Silicone Firestop Sealant is a one-part, neutral-curing silicone sealant exhibiting superior performance in applications where sealing openings in walls and floors are needed to control the spread of fire, smoke, toxic gasses, and water during fire conditions.
SpecSeal® SIL Silicone Firestop Sealant is available in non-sag (SIL300) and self-leveling (SIL300SL) grades and may also be used to seal vertical and horizontal joints between metals, masonry, concrete and other common construction materials. SpecSeal® SIL Silicone Firestop Sealant is specially designed for use in static or dynamic joints. SpecSeal® SIL Silicone Firestop Sealant reacts with atmospheric moisture to form a high-strength, durable seal that will adhere to most building substrates without the use of primers. SpecSeal® products do not contain asbestos or PCBs. -
Read MoreQuick ViewSpecSeal Putty Tube or Pad
SSP Putty & Putty Pads
SpecSeal SSP Firestop Putty excels at sealing cabling penetrations and outlet boxes. SSP Putty is non-hardening and easily hand works around grouped cabling penetrations forming a re-enterable seal allowing for future work. When applied with outlet boxes, SSP Putty easily works into voids and seams forming a continuous seal against fire and the products of combustion. -
Firestop Closet Toilet Flange Gasket
SpecSeal Closet Flange Firestop Gaskets are one-piece, molded rubber, intumescent pads that install beneath a 3″ (76 mm) or 4″ (102 mm) closet flange to effectively firestop the opening. The die cut rubber gasket is perforated to delineate removable inserts sized to accommodate various outer diameters of toilet flanges.
-
3M™ Fire Barrier Moldable Putty Pads
Our 3M™ Fire Barrier Moldable Putty Pads MPP+ are a one-part firestop material used in various fire-rated assemblies, such as electrical box protection. Designed to prevent the spread of fire, smoke and noxious gasses, this intumescent material comes ready to use in convenient 1/10” (2.54 mm) thick pads that are conformable by hand with no mixing or tools. Pads are firestop tested up to 4 hours.
Recommended Applications- Protection of membrane penetrations for listed metallic and non-metallic electrical boxes
- Wall opening protective to meet building requirements
- Seal gaps between cables in multiple penetrations (including fiber optic inner duct)
- Insulated pipe, electrical conduit and metal pipe penetrations
-
Read MoreQuick ViewSpecSeal SSW Wrap Strip, Pre-Cut or 12 Ft Roll













