SEM Multi-Purpose Panel Adhesive 7 oz kit — two-component epoxy with long working time and impact resistance

SEM 39747 Multi-Purpose Panel Adhesive is a two-component epoxy formulated to bond steel, aluminum, SMC and fiberglass for durable panel repairs and assemblies.

This 7 oz. kit pairs a resin and activator to deliver a long working time and strong impact resistance when joining body panels, structural parts, or composite panels. Designed for automotive and industrial repair shops, the adhesive cures to a rigid bond that stands up to handling and finishing processes. It works well where mechanical fasteners are impractical or where a smooth, continuous bond is preferred.

How does SEM 39747 perform during panel installation?

The adhesive provides a predictable working window that allows alignment and fit-up before it begins to set, giving technicians enough time to position panels precisely. Once cured, it contributes higher impact resistance in bonded joints compared with many single-component adhesives.

• Two-part epoxy chemistry for controlled set time
• Long working time to allow positioning and clamping
• Cured bond resists impact during handling and finishing

Which materials can this adhesive bond reliably?

SEM 39747 is formulated for common automotive substrates including steel and aluminum, plus composite materials such as SMC and fiberglass. It is suitable for both original panel replacement and aftermarket panel assembly where dissimilar materials need a strong adhesive connection.

• Steel and cold-rolled metal panels
• Aluminum body parts and trim
• SMC (sheet molding compound) and fiberglass composites

What application and cure considerations should I know?

Mix the resin and activator thoroughly according to manufacturer directions and apply within the specified pot life to ensure consistent cure. Clamping or fixturing is recommended until the adhesive achieves handling strength, and final cure may require additional time or temperature depending on conditions.

• Follow mixing ratio and pot life guidance for full performance
• Use clamps or straps for precise gap control during cure
• Allow full cure before sanding, painting, or load-bearing use

How does this product integrate into an autobody workflow?

SEM 39747 fits into repair workflows where welded joints are not suitable or where a sealed, smooth surface is desired. It can be used before or after surface prep and priming steps, and it accepts common finishing processes once fully cured.

• Compatible with standard surface preparation and primer systems
• Allows smooth transitions for filler and paint after cure
• Reduces need for mechanical fasteners in many panel applications

Who is this for: SEM 39747 Multi-Purpose Panel Adhesive is aimed at professional auto body technicians, collision repair shops, and industrial maintenance teams that need a dependable two-part epoxy for bonding metal and composite panels. It’s ideal when a strong, impact-resistant bond and a workable pot life are required to complete precise panel installations and repairs.