Flame Buster®Intumescent Silicone

Intumescent Silicone Sealant


This expanding, neutral cure intumescent sealant is designed to prevent the spread of fire, smoke & toxic gases. When exposed to temperatures above 300˚F, it expands to fill the voids left by collapsed materials.

FBC ™ System Compatible indicates that this product has been tested and is monitored on an ongoing basis, to assure its chemical compatibility with FlowGuard Gold ®, BlazeMaster ® and Corzan ® piping systems and products made with TempRite ® Technology. The FBC System Compatible Logo, FBCTM, FlowGuard Gold ®, BlazeMaster ®, Corzan ® and TempRite ® are trademarks of Lubrizol Advanced Materials, Inc. or its affiliates

PVC and other plastic through-penetrations


  • Expands at temperatures over 300°F
  • Expands to 6 times original volume (at 662°F)


including 3/8” vertical wall joint and an open 4” diameter through penetration resembling UL 2079 and UL 1479 assemblies respectively., Meets performance requirements of ASTM E-814 (UL1479), ASTM E-84 (UL 723), UBC7-5, This sealant was tested according to ASTM E90 to verify no performance loss for an STC 57 wall partition bearing multiple firestop systems

SKU Listing
Product # Color Size Safety Data Sheet UPC
W44107010 Red 10 oz. Download 023275880108
Product #1
Product # W44107010
Color Red
Size 10 oz.
Safety Data Sheet Download
UPC 023275880108