Home / Products / Div 07 — Thermal & Moisture Protection / SpecSeal SIL300 SL Self-Leveling Silicone Sealant
Div 07 · Thermal & Moisture Protection
SpecSeal SIL300 SL Self-Leveling Silicone Sealant
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Specified Technologies Inc. · SIL300 SL
A self-leveling silicone firestop sealant that flows smooth on horizontal surfaces, curing to a flexible seal in floor joints.
✓ Verified 2026-08-28
Specs on this page were checked against STI SpecSeal SIL product page on 2026-08-28.
Specifications
| Consistency | Self-leveling, for horizontal joints and slabs |
Certifications & Standards
UL 1479
Attributes — product claims, not third-party certifications
Self-levelingSilicone basedClass 1 W Rating for water resistance
Sustainability
No sustainability metrics on file for this product.