10 Best Automotive Seam Sealers of 2021

Top 10  Automotive Seam Sealers:  Editor Recommended

1. ACDelco 10-2013 Body Joint and Seam Filler Compound – 11 oz

ACDelco 10-2013 Body Joint and Seam Filler Compound - 11 oz

Features:

  • For professional use only – not for retail sale
  • Fast curing and skins over quickly—can be painted 60 minutes after application
  • Can be used for all sealing and adhesive applications with a standard caulking gun in both vertical and horizontal joints
  • Flexible, non-staining, and non-sagging product that will not crack or shrink

2. 3M Urethane Seam Sealer, 08367, Black, 310 mL Cartridge

3M Urethane Seam Sealer, 08367, Black, 310 mL Cartridge

Features:

  • High quality, single component formula adheres well to bare metal, primed metal and painted surfaces
  • Moisture curing property provides excellent performance in high heat and humidity environments
  • Non-Shrinking, non-cracking, low/no odor formula remains flexible and offers superior results to solvent-based sealers
  • Thick consistency is able to fill large voids
  • Can be smoothed to a featheredge or brushed
  • Paintable after 30-45 minutes

3. 3M Dynatron Auto Seam Sealer Caulk, 550, Grey, 12 oz

3M Dynatron Auto Seam Sealer Caulk, 550, Grey, 12 oz

Features:

  • Fast-skinning
  • Permanently elastic
  • Non sagging

4. Barrier Bond Brushable Seam Sealer -Quart Can with 30.4 Fluid Ounce

Barrier Bond Brushable Seam Sealer -Quart Can with 30.4 Fluid Ounce

Features:

  • Brushable Seam Sealer is fast drying and designed exclusively for automotive uses.
  • This product remains flexible and will not crack, harden, sink or sag
  • This product remains flexible and will not crack, harden, sink or sag
  • It provides excellent adhesion, seals cracks, crevices, body seams and is ideal for use on all lap and flange seams and joints
  • Brushable Seam Sealer is paintable in 30 to 60 minutes and comes in a light gray color

5. SEM 29392 Black Seam Sealer – 10.1 fl. oz.

SEM 29392 Black Seam Sealer - 10.1 fl. oz.

Features:

  • Intense color collection that provide high visual impact
  • Not compatible with synthetic enamels
  • They should be applied over bright white for maximum brightness
  • Remains flexible without shrinking or cracking

6. 3M Heavy-Bodied Seam Sealer, 08308, 200 mL Cartridge

3M Heavy-Bodied Seam Sealer, 08308, 200 mL Cartridge

Features:

  • A high performance two component epoxy seam sealer. Black in color.
  • Heavy-bodied, non-sagging, non-flowing, and easy tooling formulation for matching OEM seam sealer appearances. Appropriate for bare metal applications.

7. 3M Self-Leveling Seam Sealer, 08307, 200 mL Cartridge

3M Self-Leveling Seam Sealer, 08307, 200 mL Cartridge

Features:

  • Self-leveling epoxy designed for areas requiring a flowable type sealer
  • Ready for painting in 15 minutes
  • Transparent in color for a low profile appearance
  • Cured sealer matches OEM seams for a professional look
  • Formula is made for the automotive aftermarket industry

8. 3M Flexiclear Body Seam Sealer, 08405, 1/10 gal cartridge

3M Flexiclear Body Seam Sealer, 08405, 1/10 gal cartridge

Features:

  • Clear, non-yellowing formula is low profile
  • Low modular sealer stays flexible once cured
  • Fast-drying formula may be painted in as few as 45 minutes
  • Caulk style dispensing system offers convenient application

9. Akfix Urethane Auto Body Seam Sealer 10.5 fl oz – Gray

Akfix Urethane Auto Body Seam Sealer 10.5 fl oz - Gray

Features:

  • Designed to adhere to bare metal, primed metal, metal containers and more.
  • Non-sagging single component formula to fill large voids
  • Does not shrink or crack stays permanently flexible.
  • Seals against water, air, gas and dust.
  • Paintable. No-stick formula does not pick up dirt.

10. SEM 29372 Gray Seam Sealer – 10.1 fl. oz.

SEM 29372 Gray Seam Sealer - 10.1 fl. oz.

Features:

  • SEM Seam Sealer is a versatile single component sealer for sealing interior or exterior seams, joints and voids
  • It has a flexible, non-sag formula that contains no isocyanates

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