SpecSeal SIL300 silicone sealant is a high performance silicone firestop sealant tested to resist the passage of smoke, flame and water through construction joints and through-penetrations. SIL300 sealant cures to form a flexible seal and carries a class 1 W rating for water resistance (per ANSI/UL1479).
- Low modulus allows dynamic movement in joints
- Non-halogenated
- Auto bonding allows fresh sealant to adhere to cured sealant
- Excellent water resistance for water-tight sealing, including class 1 W ratings (UL1479)
- Ozone and UV resistant for excellent weathering ability and long service life
- Excellent chemical resistance protects in polluted or corrosive atmospheres
- Excellent adhesion to most building substrates
- Excellent smoke seal
- Neutral cure
- Safe, no asbestos, no PCB's, no inorganic fibers
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