This is what Supreme uses when building their cargo boxes. I used it as a sealer in my bathtub, it lasted 7 years and has never cracked or discolored, it started peeling off the wall so will be using again.
π§ Liquid Nails LN 903 Industrial Construction Adhesive: High-Quality Tapes, Adhesives & Sealants
5 Review
Liquid Nails 10 Oz LN704 Adhesive
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655 High-Viscosity Pre-Blended Epoxy Adhesive
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Waterproof Polyurethane Glue, 8 Ounce Bottle, Brown - Gorilla Original Gorilla Glue (Pack Of 1)
27 Review