3M 6504 Marine Adhesive Sealant, Black, 10 oz.
The 3M 6504 Marine Adhesive Sealant, part of the 5200 series, is a versatile, high-strength polyurethane sealant designed for long-lasting bonding and sealing. Packaged in a 10-ounce cartridge, it is ideal for use on wood, fiberglass, gelcoat, and more, forming a durable, flexible bond that can withstand harsh marine environments. This sealant cures to a firm, waterproof rubber-like consistency, making it suitable for applications both above and below the waterline.
It offers excellent resistance to vibration, shock, and movement, which makes it perfect for sealing joints, bonding boat hardware, and securing portholes or deck fittings. The adhesive remains workable for up to four hours, allowing for precise application with a caulking gun. Its flexibility helps absorb stress from vibrations and changes in temperature, ensuring a reliable seal that won't crack over time.
