{"product_id":"sem-multi-purpose-panel-adhesive-epoxy-7-oz-dual-cartridge-long-working-time-strong-impact-resistance","title":"SEM Multi-Purpose Panel Adhesive epoxy, 7 oz dual-cartridge — long working time, strong impact resistance","description":"\u003cp\u003e\u003cstrong\u003eSEM 39747 Multi-Purpose Panel Adhesive is a two-component epoxy formulated to bond steel, aluminum, SMC and fiberglass panels with extended working time and strong impact resistance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for automotive bodywork, industrial repairs and composite assembly, this 7 oz epoxy system mixes resin and activator to create a high-strength adhesive that resists shock and handles shaping before full cure. Its balanced working window lets technicians position panels and make adjustments without rushing, while the cured material tolerates mechanical stresses typical in panel assemblies. The product is supplied in a convenient dual-cartridge format for measured dispensing and consistent mix ratios.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this adhesive simplify panel bonding tasks?\u003c\/h3\u003e\n\u003cp\u003eSEM 39747 streamlines panel attachment by offering a two-part epoxy that cures to a rigid, load-bearing joint. Because it bonds dissimilar metals and composite substrates, you can use the same adhesive for mixed-material repairs and assemblies, reducing product switching.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo-component formulation for predictable set and cure\u003c\/li\u003e\n  \u003cli\u003eSuitable for steel, aluminum, SMC (sheet molding compound) and fiberglass\u003c\/li\u003e\n  \u003cli\u003eLong working time to allow fitment and repositioning\u003c\/li\u003e\n  \u003cli\u003eMeasurable dispensing for consistent mixes and less waste\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat preparation and application steps are needed for best results?\u003c\/h3\u003e\n\u003cp\u003eSurface prep is critical: clean, degrease and abrade substrates to promote adhesion. Dispense and mix the two components thoroughly, apply within the working time, clamp or support panels until the adhesive sets, and follow SEM guidelines for gap size and layer thickness.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClean surfaces of rust, oil, and contaminants\u003c\/li\u003e\n  \u003cli\u003eAbrade bonding areas for mechanical grip\u003c\/li\u003e\n  \u003cli\u003eMix resin and activator per instructions; avoid cold temperatures that slow cure\u003c\/li\u003e\n  \u003cli\u003eClamp or fixture panels during initial set for accurate alignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long does it take to set and when can I finish or paint the joint?\u003c\/h3\u003e\n\u003cp\u003eSet and cure times depend on temperature, film thickness and substrate; warmer conditions accelerate cure while cooler conditions slow it. Allow sufficient time for the adhesive to reach handling strength before sanding or painting, and consult SEM technical data for recommended post-cure intervals at specific temperatures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInitial handling strength develops after the specified working\/cure window\u003c\/li\u003e\n  \u003cli\u003eFull mechanical properties require the full cure period and proper temperature management\u003c\/li\u003e\n  \u003cli\u003eSanding and finishing should be done only after the adhesive has adequately hardened\u003c\/li\u003e\n  \u003cli\u003eFollow SEM guidance for paint compatibility and surface priming\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich performance attributes should I expect after curing?\u003c\/h3\u003e\n\u003cp\u003eOnce cured, the adhesive delivers a rigid, impact-tolerant bond designed for panel loads and vibrations. It resists shear and shock better than many single-component adhesives, making it suitable for structural panel joins and repairs where durability matters.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh impact resistance for panels exposed to mechanical stress\u003c\/li\u003e\n  \u003cli\u003eStrong adhesion to metals and reinforced composites\u003c\/li\u003e\n  \u003cli\u003eDimensional stability for load-bearing joints\u003c\/li\u003e\n  \u003cli\u003eCompatible with common finishing processes when fully cured\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: SEM 39747 is aimed at professional body shop technicians, restoration specialists and fabricators who need a versatile two-part epoxy for mounting and repairing panels made of steel, aluminum, SMC and fiberglass. It’s useful when predictable working time, consistent mixes and a bond that endures impacts are required. For hobbyists tackling structural trim or composite patching, the product also offers a reliable option—provided users follow mixing, safety and surface-preparation procedures for best outcomes.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can SEM 39747 bond aluminum to fiberglass?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s formulated to bond dissimilar substrates including aluminum, steel, SMC and fiberglass when surfaces are properly prepared.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the adhesive paintable after curing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. After full cure and appropriate surface prep, the bond can be sanded and finished; follow SEM’s painting guidelines.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SEM","offers":[{"title":"Default Title","offer_id":48084075085982,"sku":"B000X1E5MA","price":89.53,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/sem-39747-front-packaging.jpg?v=1785845516","url":"https:\/\/northtrailauto.ca\/products\/sem-multi-purpose-panel-adhesive-epoxy-7-oz-dual-cartridge-long-working-time-strong-impact-resistance","provider":"North Trail Auto","version":"1.0","type":"link"}