3M Marine Adhesive/Sealant 5200 is a non-shrinking, one-part polyurethane that chemically reacts with moisture to deliver strong, flexible bonds. 3M 5200 has excellent adhesion to wood, gelcoat and fiberglass. It forms a watertight, weather-resistant seal on joints and boat hardware, above and below the waterline. In addition, its flexibility allows for dissipation of stress caused by shock, vibration, swelling or shrinking. 3M Marine Adhesive/Sealant 5200 is a one-part moisture cure polyurethane sealant that allows for a long working time. Abrading the surfaces with a 180 grit to 220 grit abrasive and subsequently wiping off residue, will enhance the bond strength. Cut tip of the nozzle to desired bead size. Puncture seal inside the threaded nozzle end and screw on nozzle. Knock out the bottom seal with a hammer and place the cartridge in a caulk gun. Apply 3M Marine Adhesive/Sealant 5200 to the seam or part to be bonded. Position parts. Tool material to your desired appearance. Remove excess material with 3M General Purpose Adhesive Cleaner 3M8987.
30 hours at 50%RH; 4 hours at 90%RH; full cure: 5 days at 50%RH
Shore A hardness
Application temperature range
40 to 100 degrees F
Service temperature range
-40 to 190 degress F
All physical properties, statements and recommendations are either based on tests we believe to be reliable or our experience, but they are not guaranteed. Because actual use conditions can vary for each application, each user must determine the suitability of 3M Marine Adhesive/Sealant 5200 for the intended use