--- product_id: 61098019 title: "Nashua FoilMastic Butyl Rubber Sealant Tape [UL 181B-FX Listed] (367-17): 3 in. (72mm Actual) x 100 ft. (Silver)" brand: "nashua" price: "1122.88 DT" currency: TND in_stock: true url: https://www.desertcart.tn/products/61098019-nashua-foilmastic-butyl-rubber-sealant-tape-ul-181b-fx-listed store_origin: TN region: Tunisia --- # 3 in. x 100 ft. size for versatile coverage Flame Spread Index < 25, smoke < 50 UL 181B-FX Listed for HVAC & building codes Nashua FoilMastic Butyl Rubber Sealant Tape [UL 181B-FX Listed] (367-17): 3 in. (72mm Actual) x 100 ft. (Silver) **Brand:** nashua **Price:** 1122.88 DT **Availability:** ✅ In Stock ## Summary > 🔧 Seal like a pro, perform like a boss! ## Quick Answers - **What is this?** Nashua FoilMastic Butyl Rubber Sealant Tape [UL 181B-FX Listed] (367-17): 3 in. (72mm Actual) x 100 ft. (Silver) by nashua - **How much does it cost?** 1122.88 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/61098019-nashua-foilmastic-butyl-rubber-sealant-tape-ul-181b-fx-listed) ## Best For - nashua enthusiasts ## Why This Product - Trusted nashua brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Flexible Foil Backing:** Dead-soft 2 mil aluminum foil conforms effortlessly to curves, corners, and odd shapes—no gaps, no fuss. - • **High-Pressure Performance:** Certified to handle up to 10-inch w.g. pressure classes and seal classes A, B, and C for demanding HVAC systems. - • **Code-Ready & LEED Friendly:** UL 181B-FX listing plus low VOC content supports energy optimization and low-emission building credits. - • **Durable & Weather-Resistant:** Resists humidity, solvents, flame spread, smoke, and high temperatures to keep your projects safe and compliant. - • **Instant Airtight & Watertight Seal:** Aggressive butyl mastic adhesive locks out moisture and air instantly for reliable HVAC and roofing protection. ## Overview Nashua FoilMastic Butyl Rubber Sealant Tape is a UL 181B-FX listed, 3-inch by 100-foot aluminum foil tape coated with 15 mils of butyl rubber adhesive. Engineered for indoor/outdoor HVAC sealing and sheet metal repairs, it delivers instant airtight and watertight seals, withstands high pressure up to 10-inch w.g., and meets strict flame and smoke standards—all while supporting LEED credits with low VOC emissions. ## Description Nashua 367-17 FoilMastic Butyl Rubber Sealant Tape is a UL 181B-FX listed 2 mil dead-soft aluminum foil tape coated with 15 mils of butyl rubber mastic adhesive. Used for indoor and outdoor sealing of low, medium, and high pressure HVAC systems including sheet metal and flexible duct systems. Also to seal cracks and seams in gutters, sheet metal roofing and trailers; plus for basic sheet metal repairs.Features & Benefits • Aggressive butyl mastic adhesive- Provides instant water and air-tight seal- Resistant to moisture and solvents- Performs to SMACNA 0.5-inch, 1-inch, 2-inch, 3-inch, 4-inch, 6-inch up to 10-inch w.g. pressure classes and seal classes A, B, and C.- Conformable foil backing: easy to use in tight spaces; conforms easily to round, square or odd-shaped objects.- UL 181B-FX Listed: meets code requirements and can contribute toward requirements for EA Credit 1 (Optimize Energy Performance) under LEED.- Low VOC Content: can contribute toward satisfying EQ Credit 4.1 (Low Emitting Materials) under LEED.- Shows excellent resistance to growth, humidity, flame spread, smoke generation, and the effects of high temperatures. Please note that Nashua 367-17 and Polyken 367-17 are the same product manufactured by Berry Plastics. Therefore the tape roll core may be branded with Nashua or Polyken, depending on current inventory. Country of Origin: United States. ## Features - Nashua 367-17 FoilMastic Butyl Rubber Sealant Tape is a UL 181B-FX listed 2 mil dead-soft aluminum foil tape coated with 15 mils of butyl rubber mastic adhesive. Nashua 367-17 is used for indoor and outdoor sealing of low, medium, and high-pressure HVAC systems including sheet metal and flexible duct systems. Also to seal cracks and seams in gutters, sheet metal roofing and trailers, and for basic sheet metal repairs. - This tape has aggressive butyl mastic adhesive, provides instant water and air-tight seal, resistant to moisture and solvents, performs to SMACNA 0.5-inch, 1-inch, 2-inch, 3-inch, 4-inch, 6-inch up to 10-inch w.g. pressure classes and seal classes A, B, and C. - Nashua 367-17 FoilMastic Butyl Rubber Sealant Tape shows excellent resistance to growth, humidity, flame spread, smoke generation, and the effects of high temperatures. Please note that Nashua 367-17 and Polyken 367-17 are the same product manufactured by Berry Plastics. Therefore the tape roll core may be branded with Nashua or Polyken, depending on current inventory. - Standards Met: UL 181B-FX Listed; Pressure testing by SMACNA Testing & Research Institute. Carrier/Backing: 2 mil aluminum foil - printed. Adhesive: butyl rubber. Release Liner: low-density polyethylene (LDPE) film. Thickness: 17 mils (carrier, adhesive) 15 mils (adhesive) 2 mils (carrier). - Adhesion: 90 ounces per inch (to stainless steel test panel). Adhesion to Backing: 40 ounces per inch. Tensile Strength: 23 pounds per inch (longitudinal). Service/Operating Temperature: 40F to 200F. Flame Spread Index: < 25. Smoke Development Index: < 50. VOC Content: < 1 g/L. Core: 3-inch diameter. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Nashua | | Part Number | 1086865 | | Product Dimensions | 15.88 x 15.88 x 7.19 cm; 1.51 kg | | Item model number | 1086865 | | Size | 3 in. x 100 ft. (72mm x 30.5m) | | Colour | Silver | | Material | 2 mil aluminum foil - printed | | Thickness | 17 Mils | | Installation method | Self-Adhesive | | Item Package Quantity | 1 | | Temperature Range | 40-200 Degrees Fahrenheit | | Measurement System | Imperial, Metric | | Accessory connection type | PSA | | Certification | Pressure testing validated by SMACNA Testing & Re, UL 181B-FX Listed | | Special Features | Printed | | Batteries included? | No | | Batteries Required? | No | | Item Weight | 1.52 kg | ## Product Details - **Brand:** Nashua - **Colour:** Silver - **Material:** 2 mil aluminum foil - printed - **Number of items:** 14 - **Recommended uses for product:** Industrial, Outdoor, Repair, Sealing ## Images ![Nashua FoilMastic Butyl Rubber Sealant Tape [UL 181B-FX Listed] (367-17): 3 in. (72mm Actual) x 100 ft. (Silver) - Image 1](https://m.media-amazon.com/images/I/81ABd2Mxn1L.jpg) ![Nashua FoilMastic Butyl Rubber Sealant Tape [UL 181B-FX Listed] (367-17): 3 in. (72mm Actual) x 100 ft. (Silver) - Image 2](https://m.media-amazon.com/images/I/31mcPoj6EYL.jpg) ![Nashua FoilMastic Butyl Rubber Sealant Tape [UL 181B-FX Listed] (367-17): 3 in. (72mm Actual) x 100 ft. (Silver) - Image 3](https://m.media-amazon.com/images/I/31f9uMwn17L.jpg) --- ## 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.tn/products/61098019-nashua-foilmastic-butyl-rubber-sealant-tape-ul-181b-fx-listed](https://www.desertcart.tn/products/61098019-nashua-foilmastic-butyl-rubber-sealant-tape-ul-181b-fx-listed) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-12*