Skip to main content

HydroFlame™ 300SL Self-Leveling Silicone Firestop Sealant

HoldRite® HydroFlame™ 300SL is a gray colored self-leveling silicone firestop sealant designed for areas that are subject to high levels of moisture or when UL listed W ratings are required. HF300SL is a quick curing silicone sealant that can be used on a wide variety of pipe types and does not require any additional tooling once the product is dispensed into the penetration firestop opening. Since it is self-leveling, it is designed to be used in floor applications only.

  • Flexible ±33% movement
  • Low VOC
  • Repels Water – excellent for W Ratings or washout conditions
  • Excellent freeze-thaw
  • 1-year shelf life
  • FBC™ system compatible
  • Easily dispensed (caulking gun or trowel)
  • ASTM G21 antifungal properties
  • UL GreenGuard Gold Certified
  • Gray color to match concrete floors or walls
  • Single component silicone
  • UL Listed Firestop Systems
  • ASTM G21 mold and mildew
Where to Buy
SKU Size Description Color
HF300SL-20S 20 oz.

Sausage

Gray
More Details

Common Applications

  • Firestopping

Approvals & Listings

  • ASTM E814
  • UL 1479
  • CAN/ULC S115
  • UL GreenGuard Gold Certified
  • FBC™ System Compatible

UL Ratings

Type UL Rating Status
Fire F
Smoke/Gas L
Thermal T
Water W
T-Rating when penetrant is non-metallic
Image
cUL Listed
Image
fbc compatible
Image
Buy american act logo
Image
GreenGuard Gold
Image
International Firestop Council Member

“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, FBC™, FlowGuard Gold®, BlazeMaster®, Corzan®, and TempRite® are trademarks of Lubrizol Advanced Materials, Inc. or its affiliates.”