3M Marine Adhesive Sealant is a durable solution for bonding and sealing marine surfaces, perfect for protecting boats and RVs both above and below water. It bonds substrates like wood, fiberglass, and metal, and is ideal for deck housings, hull fittings, and porthole mounting.
  The sealant absorbs stress from vibration, swelling, and shock, ensuring a strong bond that lasts up to 48 hours before becoming tack-free and fully cured in 5-7 days. Its resistance to saltwater and weathering makes it an excellent choice for marine applications.