3M™ Fire Barrier Moldable Putty Stix MP+ is a one-part, re-enterable, intumescent putty that can be easily formed to firestop through penetrations and blank openings in fire-rated assemblies. Formulated dark red, this easily moldable putty stick provides up to 4 hours of fire protection. These. Coatings for cable fire protection Cable penetrations seals / fire stopping for cables Pipe penetration seals / fire stopping for pipes Mixed penetrations seals / multi-transit fire stops For requests regarding technical documents or test and approval certificates, please use downloads or contact:. Fireproof putty is a critical passive fire protection material used in construction and industrial applications to seal openings around cables, pipes, ducts, and other penetrations. These specialized sealants prevent the spread of fire, smoke, and toxic gases between compartments, helping to. UNIFRAX Fyrewrap fireproof Coating for Cables, Cable Tray, and Pipeline Fireproofing - Integral Technology. Also, the intumescent swells as a result of heat exposure.
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