--- product_id: 82288591 title: "FoilMastic Butyl Rubber Sealant Tape UL 181B-FX Listed, (367-17), 3 in. (72mm Actual) x 100 ft. (Silver)" brand: "nashua" price: "4661159₫" currency: VND in_stock: true reviews_count: 9 category: "Nashua" url: https://www.desertcart.vn/products/82288591-foilmastic-butyl-rubber-sealant-tape-ul-181b-fx-listed-367 store_origin: VN region: Vietnam --- # 15 mil butyl rubber adhesive strength Operates from 40°F to 200°F UL 181B-FX Listed for HVAC sealing FoilMastic Butyl Rubber Sealant Tape UL 181B-FX Listed, (367-17), 3 in. (72mm Actual) x 100 ft. (Silver) **Brand:** nashua **Price:** 4661159₫ **Availability:** ✅ In Stock ## Summary > 🔧 Seal like a pro, last like a legend. ## Quick Answers - **What is this?** 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?** 4661159₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/82288591-foilmastic-butyl-rubber-sealant-tape-ul-181b-fx-listed-367) ## 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 - • **Instant Airtight Seal:** Aggressive butyl mastic adhesive locks out moisture and air for lasting performance. - • **Code-Approved Confidence:** UL 181B-FX listing ensures your projects meet strict HVAC and building standards. - • **Conforms to Complex Shapes:** Dead-soft 2 mil aluminum foil backing molds easily around curves and corners for seamless application. - • **Durable & Weather-Resistant:** Resists moisture, solvents, flame spread, and smoke generation—built to last indoors and out. - • **Versatile Pressure Handling:** Certified to perform across SMACNA pressure classes from 0.5 to 10 inches w.g.—ready for any HVAC challenge. ## Overview Nashua FoilMastic Butyl Rubber Sealant Tape is a UL 181B-FX listed, 3-inch by 100-foot silver aluminum foil tape coated with 15 mils of aggressive butyl rubber adhesive. Engineered for HVAC systems and sheet metal repairs, it delivers instant, airtight, and waterproof seals that withstand pressures up to 10 inches w.g. and temperatures from 40°F to 200°F. Its conformable foil backing and superior resistance to moisture, solvents, flame, and smoke make it the go-to tape for professionals demanding durability and code compliance. ## 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 | |---------------|-------| | ASIN | B079ZCJ8KC | | Adhesive Format | Rubber | | Adhesive Location | One-sided | | Adhesive Side Count | 1 | | Best Sellers Rank | #154,354 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #194 in Butyl Tape | | Brand | Nashua | | Brand Name | Nashua | | Color | Silver | | Compatible Material | Metal, Rubber | | Customer Reviews | 4.7 out of 5 stars 47 Reviews | | Foil Thickness | 2 Mils | | Included Components | ** Please Note this listing is for 1 roll only** | | Item Dimensions L x W x Thickness | 1200"L x 2.83"W x 0.02"Th | | Item Resistance | moisture_resistant, solvent_resistant | | Item Thickness | 0.43 Millimeters | | Item Weight | 3.3 Pounds | | Manufacturer | Nashua | | Material | 2 mil aluminum foil - printed | | Material Type | 2 mil aluminum foil - printed | | Model | 1086865 | | Number of Items | 1 | | Other Special Features of the Product | Aggressive Butyl Mastic Adhesive, Performs to SMACNA Pressure Classes and Seal Classes | | Part Number | 1086865 | | Product Dimensions | 1200"L x 2.83"W x 0.02"Th | | Size Name | 3 in. x 100 ft. (72mm x 30.5m) | | Special Feature | Aggressive Butyl Mastic Adhesive, Performs to SMACNA Pressure Classes and Seal Classes | | Surface Recommendation | Glass | | Tensile Strength | 23 Pounds Per Inch | | UPC | 742366010155 | | Unit Count | 30.48 Meters | | Upper Temperature Rating | 200 Degrees Fahrenheit | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Nashua - **Color:** Silver - **Material:** 2 mil aluminum foil - printed - **Number of Items:** 1 - **Special Feature:** Aggressive Butyl Mastic Adhesive, Performs to SMACNA Pressure Classes and Seal Classes ## Images ![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) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***R on June 9, 2022* ### ⭐⭐⭐⭐⭐ Review *by S***G on August 3, 2025* ### ⭐⭐⭐⭐⭐ Review *by D***B on November 11, 2019* --- ## 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.vn/products/82288591-foilmastic-butyl-rubber-sealant-tape-ul-181b-fx-listed-367](https://www.desertcart.vn/products/82288591-foilmastic-butyl-rubber-sealant-tape-ul-181b-fx-listed-367) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-17*