--- product_id: 325699185 title: "3M Aluminum Foil Tape 3340, 2.5\" x 50 yd, 4.0 mil, Silver, 1 Roll" brand: "3m" price: "€ 93.10" currency: EUR in_stock: true category: "3 M" url: https://www.desertcart.gr/products/325699185-3m-aluminum-foil-tape-3340-2-5-x-50-yd store_origin: GR region: Greece --- # Moisture & chemical resistant barrier -40°F to 300°F operational range 4.0 mil total thickness - ultra durable 3M Aluminum Foil Tape 3340, 2.5" x 50 yd, 4.0 mil, Silver, 1 Roll **Brand:** 3m **Price:** € 93.10 **Availability:** ✅ In Stock ## Summary > 🛡️ Seal like a pro, last like a legend! ## Quick Answers - **What is this?** 3M Aluminum Foil Tape 3340, 2.5" x 50 yd, 4.0 mil, Silver, 1 Roll by 3m - **How much does it cost?** € 93.10 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/325699185-3m-aluminum-foil-tape-3340-2-5-x-50-yd) ## 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:** Pressure-sensitive acrylic adhesive with easy-release liner guarantees a smooth, hassle-free installation every time. - • **Moisture & Chemical Shield:** Foil backing acts as a superior barrier against moisture, dust, and chemicals, keeping your seals airtight and reliable. - • **Certified Quality Assurance:** UL181A-P and UL181B-FX listings mean you’re using a tape trusted by professionals across industries. - • **Industrial-Grade Durability:** 4.0 mil thick aluminum foil backing ensures long-lasting, heavy-duty performance for all your sealing needs. - • **Extreme Temperature Resilience:** Operates flawlessly from -40°F to 300°F, perfect for HVAC systems exposed to harsh environments. ## Overview 3M Aluminum Foil Tape 3340 combines a robust 4.0 mil aluminum foil backing with a pressure-sensitive acrylic adhesive, delivering exceptional durability and a wide operational temperature range from -40°F to 300°F. Designed for HVAC duct sealing and vapor barriers, it offers superior resistance to moisture, dust, and chemicals. Certified to UL181A-P and UL181B-FX standards, this tape ensures professional-grade reliability and long-lasting performance across industrial and commercial applications. ## Description When sealing ducts and other surfaces for heating, ventilation and air conditioning systems (HVAC), it's essential to have a strong, long-lasting foil tape that can stand up well to hot and cold temperatures. The 3M Foil Tape 3340 has the combination of 2.0 mil aluminum foil backing and strong, pressure sensitive acrylic adhesive that gives our tape a superb operational temperature range of -40°F (-40°C) to 300°F (149°C) making it ideal for sealing rigid fiberglass duct boards and flexible air duct systems. The foil backing also serves as an excellent barrier against moisture, dust and many chemicals — making it strong, durable and long-lasting. The very low moisture vapor transmission rate makes the tape a good sealant and the acrylic adhesive supplies superior temperature and UV resistance to give you a strong, lasting and reliable bond. It also has an easy releasing poly coated kraft paper liner to protect the adhesive and keep the tape ready for use. 3340 tape meets requirements for UL 181 A-P and UL 181 B-FX Listings as a measure of reliability and quality standards. 3M Foil Tape 3340 is used in a variety of applications including heating ventilation air conditioning (HVAC), duct closure, vapor seal on reinforced fiberglass duct board, rigid fiber glass duct board, and flexible air ducts and air connectors across a number of industries, including: transportation, specialty vehicle, metalworking, construction, automotive, military and government, general industrial, MRO, electronics and aerospace. ## Features - VAPOR SEAL TAPE: 2.0 mil aluminum foil backing (4.0 mil total thickness) with a strong, pressure sensitive acrylic adhesive is ideal as a vapor seal tape for duct closure. - HOT AND COLD TEMPERATURES: Combination of a foil backing and acrylic adhesive gives this tape a superb operational temperature range of -40F-300F (-40C-149C). - EASY RELEASING LINER: Poly coated kraft paper liner protects the adhesive and keeps the tape ready for use. - LONG LASTING: The foil backing serves as an excellent barrier against moisture, dust and many chemicals - making it strong, durable and long-lasting. - APPLICATIONS: Heating Ventilation Air Conditioning (HVAC), duct closure, vapor seal on reinforced fiberglass duct board, rigid fiber glass duct board, flexible air ducts and air connectors. - Listed for both UL181A-P and UL181B-FX ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B091QCSQXK | | Adhesive Format | pressure-sensitive | | Adhesive Location | SINGLE_SIDED | | Adhesive Material | Acrylic | | Adhesive Side Count | 1 | | Best Sellers Rank | #3,295 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #49 in Duct Tape | | Brand Name | 3M | | Color | Silver | | Compatible Material | Aluminum,acrylic,glass,metal,kraft Paper | | Configuration | 2.5" x 50 YD x 0.004" | | Customer Reviews | 4.7 4.7 out of 5 stars (2,108) | | Foil Thickness | 4 mils | | Global Trade Identification Number | 00638060401323 | | Included Components | Foil Tape | | Item Dimensions L x W x Thickness | 2.5"L | | Item Highlight | HVAC, Sealing and Patching Hot and Cold Air Ducts, Fiberglass Duct Board, Insulation, Metal Repair | | Item Resistance | Chemical Resistant, Dust Resistant, Heat Resistant, Moisture Resistant | | Item Weight | 22.68 g | | Manufacturer | 3M | | Material Type | Acrylic | | Model | 40132 | | Number of Items | 1 | | Number of Packs | 1 | | Other Special Features of the Product | Long,Strong | | Part Number | 40132 | | Recommended Uses For Product | Sealing | | Size Name | 2.5 inches x 50 yards x 0.004 inches | | Surface Recommendation | Plastic | | UPC | 638060401323 | | Unit Count | 1 Count | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** 3M - **Color:** Silver - **Material:** Acrylic - **Number of Items:** 1 - **Recommended Uses For Product:** Sealing ## Images ![3M Aluminum Foil Tape 3340, 2.5" x 50 yd, 4.0 mil, Silver, 1 Roll - Image 1](https://m.media-amazon.com/images/I/91kKcruIt5L.jpg) ## Available Options This product comes in different **Pattern, Color, Size** options. ## Frequently Bought Together - 3M Aluminum Foil Tape 3340, 2.5" x 50 yd, 4.0 mil, Silver, HVAC, Sealing and Patching Hot and Cold Air Ducts, Fiberglass Duct Board, Insulation, Metal Repair - Red Devil 0841DX F-Seal 181 Duct Seal, Fiber Reinforced Water Based Duct Sealant, 1 Gallon, Gray, Made in USA - 3M Venture Tape UL181A-P Aluminum Foil Tape 1581A, Rigid and Flexible Duct Seaming, Durable, Cold Weather Adhesion, 3.89 in x 60 yd, 2 mil --- ## 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.gr/products/325699185-3m-aluminum-foil-tape-3340-2-5-x-50-yd](https://www.desertcart.gr/products/325699185-3m-aluminum-foil-tape-3340-2-5-x-50-yd) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-11-08*