3M Fire Barrier Moldable Putty Stix MP+

Overview

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 moldable putty stick provides up to 4 hours of fire protection, produces a draft and cold smoke seal and helps reduce noise transfer (STC rating of 56 when tested in an STC 56-rated wall assembly; STC 52 on back-to-back electrical boxes). It is firestop tested up to 4 hours in accordance with ASTM E814 (UL 1479) and CAN/ULC-S115, and tested in accordance with ASTM E119 (UL 263) up to 2 hours when installed per the UL wall-opening protective listing (UL Category CLIV). The pliable putty will not dry out or crumble, so it is re-enterable and repairable, has excellent adhesion and aging properties, is noncorrosive to metal and compatible with synthetic cable jackets, and is low-VOC, halogen-free and solvent-free. Technicians mold it by hand directly onto the substrate, without mixing or tools. Typical uses are protecting membrane penetrations for listed metallic and non-metallic electrical boxes, wall-opening protection, sealing gaps between cables (including fiber optic inner duct), and insulated pipe, conduit and metal pipe penetrations.

Specifications

Base Type

One-part intumescent putty

Service Temperature

N/A

Certifications

ASTM E814 (UL 1479), CAN/ULC-S115, ASTM E119 (UL 263), UL CLIV wall-opening protective

Technical Information

• Firestop tested up to 4 hours (ASTM E814 / UL 1479)
• Stays pliable; re-enterable and repairable; molded by hand
• Low VOC, halogen-free, solvent-free; noncorrosive to metal

Typical Applications

• Protecting membrane penetrations for listed electrical boxes
• Sealing gaps between cables and cable bundles, including fiber optic inner duct
• Insulated pipe, conduit and metal pipe penetrations

Industries

Technical Documents