The 3M™ Fire Barrier Moldable Putty Stix MP+ are composed of a one-part, ready-to-use, re-enterable, intumescent putty that can be easily formed to firestop through penetrations and blank openings in fire-rated assemblies.The 3M Fire Barrier Moldable Putty Stix are often used to fill voids in large openings and/or complex firestop systems. The 3M putty stix can provide up to 4 hours of fire protection. This protective and moldable putty helps prevent the spread of fire, smoke and noxious gas. It acts as a draft and cold smoke seal for systems with L-Ratings. In addition to its fire-resistant properties, this material has airborne sound reduction characteristics which helps minimize sound transmission through assemblies requiring an STC rating. It meets the requirements of key life safety codes, including the International Building Code (IBC), NFPA 5000, NEC (NFPA 70), NFPA 101 and NBC (Canada) Building Codes. It also meets the intent of LEED green building program credits VOC environmental regulations.
Firestop tested up to four hours in accordance with ASTM E 814 (UL 1479) and CAN/ULC S115
Helps reduce noise transfer (STC-Rating of 56 when tested in STC 56-rated wall assembly)
Noncorrosive to metal and compatible with synthetic cable jackets
Often used to fill voids in large and/or complex firestop systems
Pliable and conformable (molds easily into required shapes)
Provides draft and cold smoke seal
Will not dry out or crumble
