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STI - Firestop Authority
STI SIL305 Self-Leveling Silicone Firestop Sealant - 5 Gallon Pail
QXO product C-385382 · 1 options
Selected: STC SIL 305 SL SILICONE 5G
QXO SKU 385382 · Product number STCSIL305SL
Free, no-obligation quote. Our team confirms local availability, required quantities, compatible components, and installation pricing.
Selected option specifications
- UOM
- GAL|5GL
- Item Weight
- 56
- Algae Resistance
- No
About this product
STI SIL305 Silicone Firestop Sealant is a one-part,neutral-curing silicone sealant exhibiting superior performance in places where sealing openings in walls and floors are needed to control the spread of fire, smoke, toxic gasses, and water during fire conditions. STI SIL305 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. STI SIL305 Silicone Firestop Sealant is designed for use in firestop systems for through penetrations and joints. This product excels in places where greater water resistance is required. Systems have been tested for Class 1 W Ratings per UL1479. STI SIL305 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. STI Series SIL Silicone Firestop Sealant is specially designed for use in static or dynamic joints. The low modulus characteristic minimizes strain on the substrate surface and the elastomeric quality allows excellent recovery from extension and compression cycling. This product can expose you to chemicals including Carbon Black, which is known to the State of California to cause Cancer & Reproductive Harm.
