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3M Fire Barrier Water Tight Sealant 1003 SL is a self-leveling silicone sealant designed for firestop applications. This sealant creates a flexible and moisture-resistant seal, suitable for horizontal surfaces. It is a single-component product, ready to use without mixing. Tested to ASTM and UL standards, it helps control the spread of fire, smoke, and noxious gases.
This product provides effective and reliable fire protection. It meets various fire safety standards, making it suitable for dynamic and static construction joints.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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