{"product_id":"polyken-345-silver-foil-tape","title":"Polyken 345 Silver Foil Tape","description":"\u003csection class=\"shortdescription\"\u003e \u003cp style=\"margin:0; line-height:1.6;\"\u003ePolyken 345 Silver Foil Tape is a premium 5-mil dead-soft aluminum foil tape engineered for aerospace, HVAC, and industrial sealing applications requiring high heat resistance, chemical durability, and long-term vapor sealing performance.\u003c\/p\u003e \u003c\/section\u003e \u003csection class=\"maindescription\"\u003e \u003cp style=\"margin:0 0 12px 0; line-height:1.6;\"\u003ePolyken 345 Silver Foil Tape (also known as 345SW) is designed for professionals who need reliable sealing, masking, and heat shielding in demanding environments. Manufactured with a dead-soft aluminum foil backing and a high-performance solvent-resistant adhesive, this tape permanently conforms to irregular surfaces while maintaining a strong, consistent bond.\u003c\/p\u003e \u003cp style=\"margin:0 0 12px 0; line-height:1.6;\"\u003eUnlike general-purpose foil tapes, Polyken 345 is built for aerospace and industrial use where exposure to heat, moisture, chemicals, and vibration is routine. Its flame-retardant construction meets FAR 25.853(a) requirements, making it suitable for aircraft interiors, maintenance operations, and high-stakes industrial applications. The self-wound construction (345SW) eliminates release liners for faster application and reduced waste.\u003c\/p\u003e \u003cdiv style=\"margin-bottom:18px;\"\u003e \u003ch4 style=\"margin:0 0 6px 0; color:#c00000; font-weight:700;\"\u003eWhat is Polyken 345 Silver Foil Tape used for?\u003c\/h4\u003e \u003cp style=\"margin:0; line-height:1.6;\"\u003ePolyken 345 is commonly used for aerospace masking, paint stripping protection, heat shielding, HVAC duct sealing, vapor barrier applications, and industrial metal patching where long-term durability is required.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv style=\"margin-bottom:18px;\"\u003e \u003ch4 style=\"margin:0 0 6px 0; color:#c00000; font-weight:700;\"\u003eIs Polyken 345 considered “speed tape”?\u003c\/h4\u003e \u003cp style=\"margin:0; line-height:1.6;\"\u003eYes. In aviation and maintenance environments, Polyken 345 is frequently referred to as “speed tape” due to its conformability, strength, and resistance to heat and chemicals during temporary repairs and masking operations.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv style=\"margin-bottom:18px;\"\u003e \u003ch4 style=\"margin:0 0 6px 0; color:#c00000; font-weight:700;\"\u003eDoes Polyken 345 remove cleanly?\u003c\/h4\u003e \u003cp style=\"margin:0; line-height:1.6;\"\u003eWhen applied to properly prepared surfaces, Polyken 345 removes cleanly from most substrates, making it ideal for temporary masking and protection without adhesive residue.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv style=\"margin-bottom:18px;\"\u003e \u003ch4 style=\"margin:0 0 6px 0; color:#c00000; font-weight:700;\"\u003eWhat temperature range can Polyken 345 handle?\u003c\/h4\u003e \u003cp style=\"margin:0; line-height:1.6;\"\u003ePolyken 345 performs in temperatures ranging from approximately -40°F to 350°F (-40°C to 177°C), maintaining adhesion and foil integrity in high-heat environments.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv style=\"margin-bottom:18px;\"\u003e \u003ch4 style=\"margin:0 0 6px 0; color:#c00000; font-weight:700;\"\u003eHow does Polyken 345 compare to 3M 425?\u003c\/h4\u003e \u003cp style=\"margin:0; line-height:1.6;\"\u003ePolyken 345 is widely regarded as a U.S.-made alternative to 3M™ 425 Aluminum Foil Tape, offering comparable thickness, conformability, and performance for aerospace and industrial sealing applications.\u003c\/p\u003e \u003c\/div\u003e \u003c\/section\u003e \u003csection class=\"productfeatures\"\u003e \u003cul style=\"margin:0; padding-left:18px; line-height:1.6;\"\u003e \u003cli\u003ePremium dead-soft aluminum foil tape for industrial and aerospace use\u003c\/li\u003e \u003cli\u003e5-mil total thickness for durability and puncture resistance\u003c\/li\u003e \u003cli\u003eHigh-performance solvent-resistant adhesive\u003c\/li\u003e \u003cli\u003eSelf-wound construction (no release liner) for faster application\u003c\/li\u003e \u003cli\u003eExcellent conformability to irregular and contoured surfaces\u003c\/li\u003e \u003cli\u003eHigh heat resistance for demanding environments\u003c\/li\u003e \u003cli\u003eFlame retardant; meets FAR 25.853(a)\u003c\/li\u003e \u003cli\u003eClean removal on most properly prepared surfaces\u003c\/li\u003e \u003cli\u003eIdeal for sealing, masking, vapor barriers, and heat shielding\u003c\/li\u003e \u003c\/ul\u003e \u003c\/section\u003e \u003csection class=\"techspecs\"\u003e \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eProduct Name\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003ePolyken 345 Silver Foil Tape\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eBrand\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003ePolyken\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eManufacturer SKU\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003e345 \/ 345SW\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eProduct Type\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eAluminum Foil Tape\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eColor\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eSilver\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eTotal Thickness\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003e5 mil (3 mil foil \/ 2 mil adhesive)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eAdhesion to Steel\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003e68 oz\/in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eTensile Strength\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003e26 lb\/in\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eOperating Temperature\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003e-40°F to 350°F\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eCertifications\u003c\/td\u003e \u003ctd style=\"padding:8px 10px; border:1px solid #e6e6e6;\"\u003eFAR 25.853(a), SAE AMS-T-23397B\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/section\u003e \u003csection class=\"extinfo\"\u003e \u003ch3 style=\"margin:0 0 8px 0;\"\u003eApplication Guidance\u003c\/h3\u003e \u003cul style=\"margin:0 0 14px 0; padding-left:18px; line-height:1.6;\"\u003e \u003cli\u003eClean surfaces thoroughly to remove oil, dust, and moisture before application.\u003c\/li\u003e \u003cli\u003eApply with firm pressure using a squeegee or roller for maximum adhesion.\u003c\/li\u003e \u003cli\u003eEnsure final tape edges are fully pressed down to prevent flagging.\u003c\/li\u003e \u003cli\u003eAllow adhesive to dwell before exposure to extreme heat or chemicals.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3 style=\"margin:0 0 8px 0;\"\u003eStorage \u0026amp; Handling\u003c\/h3\u003e \u003cul style=\"margin:0; padding-left:18px; line-height:1.6;\"\u003e \u003cli\u003eStore in a cool, dry place away from direct sunlight.\u003c\/li\u003e \u003cli\u003eDo not stretch during application to avoid edge lifting.\u003c\/li\u003e \u003cli\u003eIndustrial and professional use recommended.\u003c\/li\u003e \u003c\/ul\u003e \u003c\/section\u003e \u003csection class=\"abovepricing\"\u003e \u003cul style=\"margin:0; padding-left:18px; line-height:1.6;\"\u003e \u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e Aerospace masking, HVAC duct sealing, vapor barriers, heat shielding, and industrial maintenance\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWhy choose Polyken 345:\u003c\/strong\u003e Dead-soft foil + high-performance adhesive + aerospace flame certification\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eQuick spec:\u003c\/strong\u003e 5 mil silver foil tape, -40°F to 350°F, self-wound option, FAR 25.853(a) compliant\u003c\/li\u003e \u003c\/ul\u003e \u003c\/section\u003e","brand":"Custom Tapes","offers":[{"title":"Default Title","offer_id":49891106980086,"sku":"Polyken345","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0518\/6538\/7192\/files\/Polyken-345-Silver-Foil-Tape.png?v=1770943168","url":"https:\/\/customtapes.com\/products\/polyken-345-silver-foil-tape","provider":"Custom Tapes","version":"1.0","type":"link"}