66529, Fire Stop Mastic Spray

66529, Fire Stop Mastic Spray – Firestop Sealant for Electrical and Construction Applications The 66529 Fire Stop Mastic Spray by RectorSeal is a firestop sealant designed to provide an elastomeric membrane seal suitable for dynamic movement in construction joints and penetrations. This product is ideal for use in electrical distribution, lighting solutions, wire and cable applications, and as a fire protection component in switchgear assemblies. The spray form offers a fast and economical installation method for long joint runs, ensuring compliance with fire safety standards. Specifications Manufacturer: RectorSeal Manufacturer Part #: 66529 Product Weight: 55 lbs Color: Red UL Classified: Up to 4 hours STC Rating: 65 Tested Standards: ASTM E814 (UL 1479) & ASTM E1966 (UL 2079) Shelf Life: 3 years UPC: 021449665292 Features Extremely flexible firestop sealant Provides excellent dynamic movement accommodation Freeze-thaw resistant for durability in varying environments Mold inhibitor tested to ASTM G21 Suitable for construction joints, cable trays, HVAC ductwork, and deflection track wall systems Fast, economical spray application for long joint runs Downloads & Links Warranty Catalog