3M 4200 Dry Sealing Adhesive Black 310ml

A general purpose polyurethane of a part that reacts chemically
with moisture to deliver flexible bonds with excellent adhesion to wood, fiberglass, gelcoat, some plastics and metals.
It can be painted and sandable paints.
Watertight, weatherproof joints and hardware above or below the waterline.
This product is approximately half the force of 3M 5200, which allows the disassembly of parts.