{"product_id":"henkel-technomelt-pa-638-black-hot-melt-adhesive","title":"Henkel Technomelt PA 638 Black UL 94 V-0 Rated Polyamide Hot Melt Adhesive","description":"\u003ch2\u003eTechnomelt PA 638 Black for Low Pressure Molding and Electronics Encapsulation\u003c\/h2\u003e\n\u003cp\u003eTechnomelt PA 638 Black is a polyamide hot melt adhesive engineered for low pressure molding and electronics encapsulation. UL 94 V-0 rated and designed to perform from -40°F to 266°F (-40°C to 130°C), it provides reliable protection in demanding electrical and industrial environments. The material forms a durable yet flexible barrier that helps protect sensitive components from vibration, impact, and environmental exposure while enabling efficient, cure-free processing.\u003c\/p\u003e\n\u003ch3\u003eKey Advantages of PA 638 Black for Low Pressure Molding\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL 94 V-0 Flame Rating:\u003c\/strong\u003e Supports safety compliance requirements in electronic and electrical assemblies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature Range:\u003c\/strong\u003e Performs reliably from -40°F to 266°F (-40°C to 130°C) in demanding industrial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Yet Flexible Protection:\u003c\/strong\u003e Forms a resilient encapsulant that helps absorb vibration and mechanical stress without cracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for Low Pressure Molding:\u003c\/strong\u003e Low-viscosity processing helps protect delicate components during encapsulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCure-Free Thermoplastic Processing:\u003c\/strong\u003e Solidifies quickly after molding to streamline production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSeries: Technomelt PA 638 Black\u003c\/li\u003e\n\u003cli\u003eType: Hot Melt Adhesive\u003c\/li\u003e\n\u003cli\u003eApplication: Molding\u003c\/li\u003e\n\u003cli\u003eChemistry: Polyamide\u003c\/li\u003e\n\u003cli\u003eComponents: One-Component\u003c\/li\u003e\n\u003cli\u003eCure: Physical Setting\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003cli\u003eApplication Temperature: 392 – 464°F (200 – 240°C)\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Range: -40 – 266°F (-40 – 130°C)\u003c\/li\u003e\n\u003cli\u003eSoftening Point: 338 – 356°F (170 – 180°C)\u003c\/li\u003e\n\u003cli\u003eMelting Viscosity:\u003c\/li\u003e\n\u003cul\u003e\n\u003cli\u003e5,000 cps @ 392°F (200°C)\u003c\/li\u003e\n\u003cli\u003e2,800 – 4,000 cps @ 410°F (210°C)\u003c\/li\u003e\n\u003cli\u003e2,900 cps @ 428°F (220°C)\u003c\/li\u003e\n\u003cli\u003e2,300 cps @ 446°F (230°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003eDensity: 0.98 g\/cm³ @ 68°F (20°C)\u003c\/li\u003e\n\u003cli\u003eShore A Hardness: 90\u003c\/li\u003e\n\u003cli\u003eYield Strength: 652 psi (4.5 N\/mm²)\u003c\/li\u003e\n\u003cli\u003eBreak Strength: 754 psi (5.2 N\/mm²)\u003c\/li\u003e\n\u003cli\u003eElongation: 300%\u003c\/li\u003e\n\u003cli\u003eTemperature Creep Resistance: 311°F (155°C)\u003c\/li\u003e\n\u003cli\u003eLow Temperature Flexibility: -22°F (-30°C)\u003c\/li\u003e\n\u003cli\u003eGlass Transition (Tg): -32.8°F (-36°C)\u003c\/li\u003e\n\u003cli\u003eApprovals: Flame Rating UL 94 V-0\u003c\/li\u003e\n\u003cli\u003eShelf Life: 24 Months (when properly stored)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Henkel Technomelt","offers":[{"title":"Default Title","offer_id":48025961988313,"sku":"HEN TM PA 638 BLK CTN","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1600\/8847\/files\/henkel-technomelt-pa-638-black-hot-melt-adhesive.jpg?v=1772572163","url":"https:\/\/www.hotmelt.com\/products\/henkel-technomelt-pa-638-black-hot-melt-adhesive","provider":"Hotmelt.com","version":"1.0","type":"link"}