--- product_id: 13055649 title: "Fire Barrier Moldable Putty Stix MP+, Red Color, 1.45 in x 6 in" price: "€ 55.63" currency: EUR in_stock: true reviews_count: 11 url: https://www.desertcart.com.cy/products/13055649-fire-barrier-moldable-putty-stix-mp-red-color-1-45 store_origin: CY region: Cyprus --- # STC 56 noise reduction 4-hour fire resistance ready-to-use, moldable putty Fire Barrier Moldable Putty Stix MP+, Red Color, 1.45 in x 6 in **Price:** € 55.63 **Availability:** ✅ In Stock ## Summary > 🔥 Mold your safety, seal your peace of mind 🛡️ ## Quick Answers - **What is this?** Fire Barrier Moldable Putty Stix MP+, Red Color, 1.45 in x 6 in - **How much does it cost?** € 55.63 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/13055649-fire-barrier-moldable-putty-stix-mp-red-color-1-45) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Repairable:** Won't dry out or crumble, ensuring long-lasting, maintainable firestops. - • **Noise & Smoke Barrier:** STC 56-rated to reduce sound transfer while blocking drafts and cold smoke. - • **Effortless Application:** One-part, moldable, and re-enterable—seal gaps instantly without mess or hassle. - • **Metal-Friendly Formula:** Noncorrosive and compatible with synthetic cable jackets for versatile industrial use. - • **Unmatched Fire Protection:** Certified up to 4 hours per ASTM E814 & CAN/ULC S115 for ultimate safety assurance. ## Overview 3M Fire Barrier Moldable Putty Stix MP+ is a professional-grade, intumescent firestop putty stick delivering up to 4 hours of certified fire resistance. Its ready-to-use, moldable formula creates durable seals that block fire, smoke, drafts, and noise, while remaining workable over time. Trusted in industrial settings, it’s noncorrosive and compatible with metal and synthetic cables, making it the go-to solution for reliable, long-lasting fire protection. ## Description 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 putty stix also produce a draft and cold smoke seal and help reduce noise transfer. Review: Fire seal. Works great. Fills the holes. - Very easy to work with. A little tacky on your hands so maybe wear some gloves. Its a block of putty. Fill the holes and make your inspector happy. Review: Critical to fire safety sealing. - This is the Ul/CSA certified stuff that works! I was rebuilding a Suburban RV furnace and needed a fire/heat certified putty to replace the 30 year old stuff used to seal the fuel gas supply line between the heat exchanger and blower enclosure. This is a fire safety item and I did not want to trust the foreign-sourced material. I was delighted to find this 3M product here on AMZ. Genuine 3M quality sticky stuff that seals perfectly and likely to endure another 30 years. I had to look up the word 'intumescent' lol. Oh, yeah, just what is needed. ## Features - TESTED FIRESTOP PERFORMANCE: Tested and listed up to 4-hours in accordance with ASTM E814 (UL 1479) and CAN/ULC S115 - STC RATED: STC-rating of 56 when tested in STC 56-rated wall assembly - READY TO USE IMMEDIATELY: One-part, ready-to-use, re-enterable, intumescent putty stick that can be easily formed to firestop through-penetrations and blank openings in fire-rated assemblies - CREATES A LONG LASTING SEAL: Provides draft and cold smoke seal - REMAINS WORKABLE OVER TIME: Will not dry out or crumble for a re-enterable and repairable solution - NONCORROSIVE: Will not corrode metal and is compatible with synthetic cable jackets - For industrial/occupational use only. Not for consumer sale or use. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.7 out of 5 stars 247 Reviews | ## Images ![Fire Barrier Moldable Putty Stix MP+, Red Color, 1.45 in x 6 in - Image 1](https://m.media-amazon.com/images/I/51LPfd-5eHL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fire seal. Works great. Fills the holes. *by R***. on March 20, 2026* Very easy to work with. A little tacky on your hands so maybe wear some gloves. Its a block of putty. Fill the holes and make your inspector happy. ### ⭐⭐⭐⭐⭐ Critical to fire safety sealing. *by M***S on September 27, 2025* This is the Ul/CSA certified stuff that works! I was rebuilding a Suburban RV furnace and needed a fire/heat certified putty to replace the 30 year old stuff used to seal the fuel gas supply line between the heat exchanger and blower enclosure. This is a fire safety item and I did not want to trust the foreign-sourced material. I was delighted to find this 3M product here on AMZ. Genuine 3M quality sticky stuff that seals perfectly and likely to endure another 30 years. I had to look up the word 'intumescent' lol. Oh, yeah, just what is needed. ### ⭐⭐⭐⭐⭐ Great to seal air leaks in our gas fireplace and certain exterior outlets *by D***D on March 21, 2026* This is a great solution to fix air leaks in exterior outlets when a gasket alone isn’t enough. Simply find and Seal the air gaps in the electrical box behind the outlet to stop the airflow at the source. ## Frequently Bought Together - 3M Fire Barrier Moldable Putty Stix MP+, Red Color, One-Part, Re-Enterable, Intumescent, 1.45 in x 6 in - 3M Fire Barrier Sealant CP 25WB+, Red Color, One-Component, Gun-Grade, Latex-Based, Intumescent Material, 10.1 fl oz Cartridge - 3M Fire Block Foam FB-Foam, Orange Color, Ready-To-Use, Foam-In-Place, 12 fl oz Can --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.cy/products/13055649-fire-barrier-moldable-putty-stix-mp-red-color-1-45](https://www.desertcart.com.cy/products/13055649-fire-barrier-moldable-putty-stix-mp-red-color-1-45) --- *Product available on Desertcart Cyprus* *Store origin: CY* *Last updated: 2026-08-28*