3M Fire Barrier Moldable Putty+ is a one-part, halogen-free product designed to firestop electrical outlet boxes and a wide variety of through-penetrations including cable, conduit, insulated pipe and metal pipe, which penetrate fire-rated construction.
Pliable. Easy to mold into any shape. Adheres. Sticks well to most surfaces but not to the applicator's hands. Conformable. Pads easily conform and adhere to a wide variety of metallic and non-metallic electrical outlet boxes. UL Listed. Wide range of UL Listed systems. Excellent aging properties.
Firestop tested up to 4 hours in accordance with ASTM E 814 (UL 1479) &CAN/ULC S115
Wall opening protective material tested up to 2 hours in accordance with UL 263
Provides draft and cold smoke seal
Helps reduce noise transfer (STC-Rating of 56 when tested in STC 56-rated wall assembly)
Pliable and conformable (molds easily into required shapes)
Self-adhering pads can be joined together for larger firestop applications
Noncorrosive to metal and compatible with synthetic cable jackets
Will not dry out or crumble, re-enterable
Typically used for wall opening protection of membrane penetrations by metallic and non-metallic electrical outlet boxes to meet building code requirements. It is also used to seal gaps between cables in multiple penetrations (including fiber optic inner duct) and to firestop cable bundles, insulated pipe, electrical conduit, metal pipe and other through penetrations.