--- product_id: 20016780 title: "3M(TM) Fire Barrier Sealant CP 25WB+, 20 fl. oz., Sausage, 10/case" brand: "3m" price: "R7576" currency: ZAR in_stock: true reviews_count: 2 url: https://www.desertcart.co.za/products/20016780-3m-tm-fire-barrier-sealant-cp-25wb-20-fl-oz store_origin: ZA region: South Africa --- # Up to 4-hour firestop rating Expands 3x volume at 1000°F+ One-component, no mixing needed 3M(TM) Fire Barrier Sealant CP 25WB+, 20 fl. oz., Sausage, 10/case **Brand:** 3m **Price:** R7576 **Availability:** ✅ In Stock ## Summary > 🔥 Seal the deal with 3M’s fireproof power – because safety waits for no one! ## Quick Answers - **What is this?** 3M(TM) Fire Barrier Sealant CP 25WB+, 20 fl. oz., Sausage, 10/case by 3m - **How much does it cost?** R7576 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/20016780-3m-tm-fire-barrier-sealant-cp-25wb-20-fl-oz) ## Best For - 3m enthusiasts ## Why This Product - Trusted 3m brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sound & Smoke Barrier:** Blocks airborne sound and smoke, enhancing building safety and comfort 🔇 - • **Versatile Application:** Seals HVAC, pipes, cables, and more across walls, floors, and ceilings 🛠️ - • **Easy, Clean Application:** Water-based, paintable, and re-enterable for hassle-free installation and maintenance 🎨 - • **Fire-Resistant Expansion:** Expands triple its size when exposed to extreme heat, sealing gaps instantly 🔥 - • **Certified 4-Hour Protection:** Delivers proven firestop performance with up to 4-hour UL-rated barrier ⏳ ## Overview 3M Fire Barrier Sealant CP 25WB+ is a high-performance, latex-based intumescent sealant that expands up to 3 times its volume at temperatures above 1000°F, providing up to 4 hours of firestop protection. Designed for versatile use in fire-rated walls, floors, and ceilings, it offers easy application with no mixing required, excellent adhesion, and additional sound and smoke blocking capabilities, making it an essential solution for professional-grade fire safety compliance. ## Description 3M Fire Barrier Sealant CP 25WB+ is a one-component, latex-based, intumescent sealant that dries to form a monolithic firestop seal. This sealant also acts as a barrier to airborne sound transmission. As penetrants are exposed to fire, the intumescent property of this material allows the sealant to expand and help maintain a firestop penetration seal for up to 4 hours. This sealant is designed to help control the spread of fire, smoke and noxious gases before, during and after exposure to a fire when installed in accordance with a listed through-penetration or fire-resistive joint assembly system (STC-Rating of 54 when tested in a STC 54-rated wall assembly). 3M Fire Barrier Sealant CP 25WB+ firestops blank openings and penetrations passing through fire-rated floor, floor/ceiling or wall assemblies and other fire-rated interior building construction. This halogen-free sealant is capable of expanding a minimum of 3 times its dried volume when exposed to temperatures above 1000°F (538°C). We engineered this sag-resistant sealant to exhibit strong adhesion to a full range of construction substrates and penetrants. Applied with conventional caulking equipment, this gun-grade sealant offers an excellent caulk rate - no mixing is required. In addition, this water-based sealant is paintable as well as re-enterable and repairable, offering easy application and clean-up. ## Features - 3M - BUILDING CODE COMPLIANCE – seals openings through fire barriers where mechanical services pass through - HELPS PREVENT FIRE SPREAD - capable of expanding a minimum of 3 times its dried volume when exposed to temperatures above 1000°F (538°C) - ONE PRODUCT, MANY USES – listed in hundreds of UL Firestop systems with up to 4-hour ratings - VARIETY OF APPLICATIONS - HVAC ducts and vents, pipes, blank openings, cables, through-penetrations, busways, combos, rated wall, floor and floor-ceiling assemblies and more ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B00MJ9GDZG | | Best Sellers Rank | #79,548 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #407 in Industrial Sealants | | Brand Name | 3M | | Color | Sausage | | Compatible Material | Rubber | | Customer Reviews | 4.1 4.1 out of 5 stars (7) 4.1 out of 5 stars | | Included Components | Item | | Item Dimensions | 14.29 x 9.88 x 4.29 inches | | Item Form | Fl | | Item Weight | 18 Pounds | | Manufacturer | 3M | | Material Type | Rubber | | Model | CP-25WB+20oz | | Number Of Items | 10 | | Part Number | CP-25WB+20oz | | Style Name | Mechanical | | Surface Recommendation | Miscellaneous | | Unit Count | 10.0 Count | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** 3M - **Item Weight:** 18 Pounds - **Item dimensions L x W x H:** 14.29 x 9.88 x 4.29 inches - **Material:** Rubber - **Style:** Mechanical ## Images ![3M(TM) Fire Barrier Sealant CP 25WB+, 20 fl. oz., Sausage, 10/case - Image 1](https://m.media-amazon.com/images/I/81HPQtdG3FL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good *by on Reviewed in the United States March 30, 2021* Very good ### ⭐⭐ Huge Mess *by on Reviewed in the United States April 15, 2025* One of them had exploded in the case. Huge mess. ## Frequently Bought Together - 3M(TM) Fire Barrier Sealant CP 25WB+, 20 fl. oz., Sausage, 10/case - BELAROKO Sausage Caulk Gun 600ml Sausage/Cartridge Dual-use Hand Tool 15” Caulking Gun Kit With 2 Cone Nozzles, 20-ounce (20 oz-2 pack) - JES Innovations Cone Nozzle for Sausage and Bulk Caulk Guns, 10-Pack, SD-BCNOZZLE-10PK --- ## 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.co.za/products/20016780-3m-tm-fire-barrier-sealant-cp-25wb-20-fl-oz](https://www.desertcart.co.za/products/20016780-3m-tm-fire-barrier-sealant-cp-25wb-20-fl-oz) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-07-06*