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🔥 Mold your safety, silence your space, master your environment.
3M Fire Barrier Moldable Putty Stix MP+ is a professional-grade, intumescent firestop putty stick offering up to 4 hours of fire resistance and an STC 56 soundproof rating. Ready-to-use and re-enterable, it creates durable seals that prevent drafts, cold smoke, and noise transfer without corroding metal or damaging cables—ideal for fire-rated assemblies in demanding industrial and commercial settings.



| Customer Reviews | 4.7 out of 5 stars 249 Reviews |
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