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International Fireproof Technology INSS2460 Fire Barrier Silicone Sealant

INSS2460 Fire Barrier Silicone Sealant is a one-part, neutral-curing silicone sealant used to control the spread of fire, smoke, toxic gasses, and water during fire conditions. INSS2460 offers exceptional performance and listed designs require less product, making it more cost-effective than other traditional firestop silicone sealants.

Product Type: 1K (1 component) Sealant

Application Area: Window Frames

Compatible Substrates & Surfaces: Concrete, Glass, Metal, Stone

Application Method: Gun, Trowel

Chemical Family: Silicones

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Product Highlights
  • INSS2460 is designed to seal the gaps around penetrations through fire-rated floors, walls or other assemblies as well as for sealing gaps around window and door frames in critically fire-rated structures.
  • INSS2460+ is a sprayable silicone-based firestop sealant that offers excellent flexibility, is waterproof and tested for up to a 3-hour joint system by UL2079 and ULC-S115.
  • Both products adhere to most construction materials including concrete, stone, plaster, metals, glass and plastics.
  • They are installation-friendly, are asbestos and halogen-free and ideal for interior and exterior use or where contact with moisture is a concern.
  • Once fully cured, this offer excellent weathering characteristics including UV resistance, cold temperature flexibility, dry heat aging and resistance to chalking.

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Limitations
  • Not for use in areas immersed in water.
  • The sealant can only be removed mechanically once cured.
  • This product is not intended for use in fire-rated construction.
Installation Guide
  • Before applying, clean the surface of the opening and any penetrating items to allow for proper adhesion.
  • Use mineral spirits or similar products to clean surfaces (Do not use alcohol).
  • Ensure that the surface of the substrates is dry and frost-free.
  • Install the correct depth and compression of backing material, if required, as detailed within the applicable Listed system.
  • INSS2460 can be installed with a caulking gun, putty knife, or trowel. INSS2460+ can be applied by an airless sprayer.
  • Install the applicable depth of INSS2460/INSS2460+ into the opening flush with the surface of the substrate, or as detailed within the Listed system to meet the required assembly rating.
  • Tool the sealant surface smooth using a putty knife dipped in water making complete contact with substrates to ensure an air and smoke tight seal.
  • Using mineral spirits, clean all tools and flush spray equipment immediately after use.
Types of Applications
  • No penetration
  • Metallic pipe
  • Air duct
  • Busway
  • Plastic pipe
  • Cable bundle
  • Cable tray
  • Insulated pipe
  • Multiple penetration
  • Joint systems
  • Drywall

Properties

Specifications
ValueUnitsTest Method / Conditions
Specific Density1.2 - 1.3g/cm³
VOC53.2g/L
STC64.0
Tack Free time30.0minutes
Curing time7 - 14days
Shrinkage by Weight0.1%
Hardness (Fully Cured)30 - 40Shore A
Application Temperature40 - 104°F
In-Service Temperature-13 to 176°F

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Testing
  • UL 1479 up to 3hr T, F and L Rating
  • ULC S-115 up to 3hr FTH Rating
  • CNS14514 3hr Class A and B
  • FM approved
  • GB23864
  • ASTM E84 - Flame 5 Smoke 45
  • ASTM E662 & FAR 25.853
  • ASTM D412 - 265% Elongation 42% Compression
  • ASTM C719 - Cyclic Joint Movement 50%
  • ASTM C793 - Accelerated Weathering
Performance

50+ years HOAC tested.

Packaging & Availability

Packaging
  • 310 ml/Tube,
  •  25 Tubes/CTN
  •  20 fl. oz./Sausage
  •  20 Sausages/ CTN

Storage & Handling

Storage Temperature
50 - 95 °F
Shelf Life
12 months