--- product_id: 12898938 title: "3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge" brand: "3m" price: "€ 56.20" currency: EUR in_stock: true category: "3 M" url: https://www.desertcart.hr/products/12898938-3m-fire-barrier-water-tight-sealant-1000-ns-gray-10 store_origin: HR region: Croatia --- # Class 1 water tight seal 3-hour fire resistance One-part, non-slump silicone 3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge **Brand:** 3m **Price:** € 56.20 **Availability:** ✅ In Stock ## Summary > 🔥 Seal the deal with 3M’s fire & water tight confidence 💧 ## Quick Answers - **What is this?** 3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge by 3m - **How much does it cost?** € 56.20 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/12898938-3m-fire-barrier-water-tight-sealant-1000-ns-gray-10) ## 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 - • **Effortless Application:** One-part, non-slump formula ensures clean, flexible sealing every time - • **Ultimate Water Barrier:** Achieves Class 1 W Rating for superior water leakage resistance - • **Unmatched Fire Protection:** Tested to withstand fire up to 3 hours per ASTM E814 & UL 1479 standards - • **Built for Harsh Conditions:** Durable and weather-resistant to endure tough construction environments - • **Re-Enterable & Paint Ready:** Easily repairable and primer paintable for seamless finishing ## Overview 3M Fire Barrier Water Tight Sealant 1000 NS is a professional-grade, single-component silicone sealant designed to provide up to 3 hours of fire resistance while maintaining a Class 1 water tight seal. Its non-slump, flexible formula withstands harsh construction conditions and allows for easy repairs and painting, making it the go-to solution for industrial firestop and waterproofing needs. ## Description 3M Fire Barrier Water Tight Sealant 1000 NS is a non-slump, ready-to-use, single component, neutral cure, silicone sealant that cures upon exposure to atmospheric humidity to form a flexible firestop seal. This water tight sealant help control the spread of fire, smoke and noxious gases before, during and after exposure to fire. ## Features - TESTED AND LISTED: For up to 3-hours in accordance with ASTM E814 (UL 1479), ASTM E1966 (UL 2079) and CAN/ULC S115 - FORMS AN EFFECTIVE WATER BARRIER: Meets the UL Water Leakage Test achieving a Class 1 W Rating in accordance with ANSI/UL 1479 - ONE-PART, NON-SLUMP SILICONE SEALANT: For use in both through- penetration and construction joint applications—cures to form a flexible seal - WITHSTANDS CONSTRUCTION CONDITIONS: Durable sealant provides excellent weatherability during construction - EASILY RE-ENTERABLE: Formulated as a re-enterable and repairable fire barrier solution - PRIMER PAINT READY: Sealant is paintable with primer - For industrial/occupational use only. Not for consumer sale or use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000KXA6S8 | | Best Sellers Rank | #107,165 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #96 in Industrial Thread Sealants | | Brand Name | 3M | | Color | Gray | | Customer Reviews | 4.6 4.6 out of 5 stars (70) | | Full Cure Time | 2 hours | | Global Trade Identification Number | 00051115115356 | | Included Components | FIRE BARRIER WATER TIGHT SEALANT | | Item Form | Liquid | | Item Type Name | 3M FIRE BARRIER WATER TIGHT SEALANT 1000 NS, GRAY, 10.1 FL OZ CARTRIDGE, 12/CASE | | Item Weight | 204.11 g | | Liquid Volume | 10.1 fluid ounces | | Manufacturer | 3M | | Material Type | Silicone | | Model | 1000-N/S-10.1OZ | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | 051115115356 | | Surface Recommendation | Miscellaneous | | UPC | 051115115356 | | Unit Count | 1 Count | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** 3M - **Color:** Gray - **Full Cure Time:** 2 hours - **Item Weight:** 204.11 g - **Liquid Volume:** 10.1 fluid ounces ## Images ![3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge - Image 1](https://m.media-amazon.com/images/I/21aV7ICjoGL.jpg) ![3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge - Image 2](https://m.media-amazon.com/images/I/31t1nNizrLL.jpg) ![3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge - Image 3](https://m.media-amazon.com/images/I/41uQBF8ZK+L.jpg) ![3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge - Image 4](https://m.media-amazon.com/images/I/51Gceo8EOYL.jpg) ![3M Fire Barrier Water Tight Sealant 1000 NS, Gray, 10.1 fl oz Cartridge - Image 5](https://m.media-amazon.com/images/I/41uE6WIIkjL.jpg) ## Questions & Answers **Q: i need fire resistant whit caulk to caulk fireplace** A: It’s more of a light gray than white **Q: does it stay pliable after it dries or does it get hard like mortar?** A: Stays pliable. This can be used like a silicone caulking but with fire rating. **Q: Thinking of using this to fill in holes in my truck's firewall. Any cons?** A: I would contact 3M customer support **Q: is this usable for exterior applications?** A: 3M 1000NS-CART 10.1 Oz. Fire Barrier Water Tight Sealant helps prevent further damage during new construction. It is best for wall or vertical applications. Dynamic and static construction joints. ## Frequently Bought Together - 3M Fire Barrier Water Tight Sealant 1000 NS, Gray Color, Non-Slump, Ready-To-Use, Single Component, Neutral Cure, 10.1 fl oz Cartridge - Fixinus 3-Piece Magnetic Bit Holder Set, 1/4 Inch Hex Shank Extension Magnetic Drill Holder Magnetic Drill Quick Change Bit Set for Electric Drill Screwdriver - 50/100/150 mm - Bolt Dropper 5/8" Stainless Flat Washer (100 Pack), 1-1/2" OD 18-8 (304) Stainless Steel, Suitable for Factories Repair, Kitchens, Shops, and Outdoor Construction by Bolt Dropper --- ## 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.hr/products/12898938-3m-fire-barrier-water-tight-sealant-1000-ns-gray-10](https://www.desertcart.hr/products/12898938-3m-fire-barrier-water-tight-sealant-1000-ns-gray-10) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-24*