{"product_id":"sem-flexible-primer-surfacer-aerosol-13-oz-fast-dry-high-film-build-for-automotive-plastics","title":"SEM Flexible Primer Surfacer aerosol 13 oz — fast-dry, high film build for automotive plastics","description":"\u003cstrong\u003eSEM 39133 Flexible Primer Surfacer (13 oz) is a ready-to-spray, fast-drying primer designed to build film and add flexibility when refinishing bumper covers and other automotive plastics.\u003c\/strong\u003e\n\n\u003cp\u003eThis flexible primer surfacer streamlines plastic repair and refinishing by combining strong film build with elasticity so topcoats adhere and move with substrate contours. Supplied in a convenient 13 oz aerosol, it reduces preparation time, sands smoothly, and accepts most refinish topcoats for a durable final finish. It is formulated to bond to flexible plastics common in modern automotive exterior parts, helping to prevent cracking and delamination after painting.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this primer save time during plastic repairs?\u003c\/h3\u003e\n\u003cp\u003eThe SEM 39133 arrives ready to spray, so you avoid mixing or thinning steps and can apply a uniform build rapidly. Its quick-dry chemistry allows sanding and subsequent coats the same day, cutting total turnaround time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReady-to-spray 13 oz aerosol — no batch mixing needed\u003c\/li\u003e\n  \u003cli\u003eDries rapidly for faster sanding and recoating\u003c\/li\u003e\n  \u003cli\u003eHigh film build reduces number of primer passes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it sand and feather easily for a smooth finish?\u003c\/h3\u003e\n\u003cp\u003eYes — the formulation sands cleanly, enabling technicians to shape edges and blend repairs without excessive effort. That predictable sanding behavior helps achieve a uniform surface for primer-sealer or topcoat application.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSands to a consistent profile for seamless transitions\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard sanding grits used in refinish shops\u003c\/li\u003e\n  \u003cli\u003eMinimizes surface imperfections before topcoat\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the primer flexible enough for bumpers and trim parts?\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for flexible substrates, SEM 39133 provides elasticity that moves with bumper covers and other pliable plastics, reducing the chance of cracking under stress. It forms a resilient film that supports long-lasting adhesion of refinish topcoats.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlexible formulation engineered for automotive plastics\u003c\/li\u003e\n  \u003cli\u003eHelps prevent topcoat failure on moving or impact-prone parts\u003c\/li\u003e\n  \u003cli\u003eWorks well on many OEM and aftermarket plastic substrates\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat topcoats can you use over this surfacer?\u003c\/h3\u003e\n\u003cp\u003eThe surfacer accepts most common refinishing topcoats, allowing shops to use their preferred color systems. Proper surface preparation and following the topcoat manufacturer's recommendations ensure optimal adhesion and appearance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with common refinish basecoats and clears\u003c\/li\u003e\n  \u003cli\u003eFollow standard bonding and tack-free times before topcoating\u003c\/li\u003e\n  \u003cli\u003eTest for adhesion on unusual plastics when in doubt\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: SEM 39133 Flexible Primer Surfacer (13 oz) is intended for collision-repair technicians, autobody shops, and DIY enthusiasts working on bumper covers, exterior trim, and other flexible plastic parts. It suits users who need a ready-to-use aerosol that builds film quickly, sands predictably, and accepts industry-standard topcoats for a professional refinish without complex mixing or long wait times.\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 this primer be used directly on bumper covers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. SEM 39133 is formulated for bumper covers and flexible plastics, but clean and scuff the surface before application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long before I can sand and topcoat?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It dries quickly; sanding and recoating are typically possible the same day depending on conditions. Follow shop guidelines.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SEM","offers":[{"title":"Default Title","offer_id":48086162800798,"sku":"B000HAXLZO","price":49.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/sem-39133-front-can-13oz.jpg?v=1785887722","url":"https:\/\/northtrailauto.ca\/products\/sem-flexible-primer-surfacer-aerosol-13-oz-fast-dry-high-film-build-for-automotive-plastics","provider":"North Trail Auto","version":"1.0","type":"link"}