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The RectorSeal 66383 Metacaulk Mc 150+ Firestop Sealant is designed to prevent the spread of fire, smoke, hot gasses, and water. It is suitable for construction joints and through penetrations and can be applied to metal, insulated pipes, fiberglass, plastic pipes, wall joints, and power, telephone, and datacomm cables. It is a water-based, non-sag caulking grade heat resistant sealant that is easy to apply and retrofit.
This firestop sealant provides a flexible barrier protection for interior use, with excellent freeze-thaw capability and VOC compliance.
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