SEM 40377 2K Heavy Bodied Epoxy Seam Sealer BLACK 7 oz Cartridge Automotive

Brand: SEM

Warranty: No Warranty

Unit Type: oz

Manufacturer Part Number: 40377

Unit Quantity: 1

California Prop 65 Warning: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.

Country of Origin: United States

SEM 40377 Dual-Mix Heavy Bodied Black Seam Sealer - 7 oz Cartridge

Brand New, Genuine SEM Product! Perfect for automotive restoration, body repairs, or any project requiring a professional-grade seal on seams, joints, and voids. This high-viscosity, two-component epoxy is OEM recommended and designed for both interior and exterior use. It matches most black OEM sealers, stays flexible without cracking or shrinking, and can even be sprayed for versatile application.

Key Features:

• Direct to Metal Application: Apply straight to bare metal, primed surfaces, or OEM finishes.
• Fast Setting: Working time of 10 minutes, sets in 15 minutes, and fully cures in 1 hour at 70°F.
• Paintable Right Away: Solvent-based paints can be applied immediately; wait 15 minutes for waterborne.
• Non-Sag Formula: Holds tooling marks perfectly for a pro finish.
• Flexible and Durable: Won't crack or shrink, backed by SEM's Dual-Mix Forever Warranty.
• Sprayable Option: Use with compatible applicators to mimic factory textures.
• Size: 7 oz cartridge (requires a dual-cartridge applicator gun - not included).

Ideal for sealing door skins, trunk seams, wheel wells, floor pans, and more on cars, trucks, or other vehicles. Whether you're a weekend warrior or pro mechanic, this sealer delivers OEM-quality results at home.

DIY Easy-to-Follow Instructions:

Follow these simple steps for a flawless application. Always wear protective gear like gloves, safety glasses, and a respirator. Work in a well-ventilated area at around 70°F for best results. Review the full SDS for safety info.

Step 1: Preparation

• Warm your vehicle or workspace to 70°F for at least an hour.
• Clean the seams or joints with a surface cleaner like SEM Solve.
• Sand the area: Use P80 grit on bare metal or P400 grit/a scuff pad on primed/OEM surfaces.
• Blow off dust, re-clean with surface cleaner, and tack wipe to remove lint.
• For flexible areas (e.g., roof panels), apply a two-component primer first and let it cure fully. Avoid acid-etch primers to prevent issues like cracking.

Step 2: Mixing

• Insert the cartridge into a universal manual or pneumatic applicator gun.
• Remove the cap by prying it off with a screwdriver.
• Squeeze out product until both components flow evenly (equalize).
• Attach a static mixer tip (sold separately) and cut the end to your desired bead size.
• Hold the gun upright until product fills the mixer, then test dispense a small bead to check mixing.

Step 3: Application (Beading Method)

• Apply the sealer directly into the seam or joint.
• Smooth it out with a gloved finger, putty knife, or brush for a clean finish.
• For OEM-like beads, use optional tips like ORBiT for ripples or Versa-Tip for ribbons.
• Wipe away excess while wet using a VOC-compliant solvent.

Alternative: Spraying

• If spraying, use a Quick Spray System with a pneumatic applicator to create textured finishes.

Step 4: Finishing

• Paint immediately with solvent-based coatings or after 15 minutes with waterborne. Scuff lightly if painting later than 24 hours.
• Let cure fully (1 hour at 70°F) before heavy use.

Tips for Success:

• Test on a scrap piece first.
• Store unused product in a cool, dry place - shelf life is 2 years.
• If recapping, align the shapes on the cap and snap it back on.

This SEM 40377 sealer is a game-changer for DIY auto repairs - get that factory-fresh seal without the shop costs! Ships fast with tracking. Questions? Message me!