3M Marine Adhesive Sealant 5200 (06500) Permanent Bonding and Sealing for Boats 3M Marine Adhesive Sealant 5200 is a tough, flexible polyurethane for permanent bonding and sealing your RV, boat or other watercraft. It is ideal for use on wood, gelcoat, fiberglass, metal and more. It is recommended for interiors, below the waterline and any other places that are shielded from sunlight. It applies right from the container ? no mixing is required. It becomes tack-free in 48 hours, and cures to form a firm, flexible, waterproof seal on joints and boat hardware. Far more than a marine caulk, tough, flexible Marine Adhesive 5200 dissipates stress caused by vibration and shock, and won?t crack under dynamic force. It resists saltwater, wind, weather and temperature extremes for long periods of worry-free enjoyment on the water. In fact, for more than 50 years, 3M Marine Adhesive Sealant 5200 has been used and trusted as a marine sealant by professionals in some of the most demanding conditions on earth. Features USE WHAT THE PROS USE ? Extremely strong adhesive sealant retains strength above or below waterline BONDS PERMANENTLY ? Ideal for sealing, bonding and attaching on the interiors of boats and RVs, or on exteriors below the waterline and where shielded from the sun LONG LASTING FORMULA ? Tough polyurethane polymer resists weathering and salt water WON?T CRACK OR PEEL ? Stays flexible, retaining strong bonds even during vibration, structural movement or shock EASY TO APPLY ? Adhesive sealant requires no mixing, cures completely in 5-7 days USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.