This is what Supreme uses when building bodies for their trucks. 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.
655 High-Viscosity Pre-Blended Epoxy Adhesive
3 Review
Enhanced Conductivity Dispensers by MG Chemicals
4 Review
SCIGRIP 10799 3 Acrylic Solvent Cement, Low-VOC, Water-Thin And Very Fast Setting, Clear, 1/4 Pint (4 Fl Oz)
5 Review
PVA glue Titebond III Ultimate high moisture resistance, 118 g
6 Review