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3M 1003-S/L-10.1OZ is a fire barrier watertight sealant designed to form a flexible seal that controls the spread of fire, smoke, and gases. This silicone-based sealant is ready to use and cures with exposure to humidity, making it ideal for various applications in construction. It provides up to a three-hour fire rating when properly installed in listed systems.
This sealant protects against fire and moisture while minimizing noise transfer. It is easy to apply and offers exceptional weatherability.
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