3M 6500 Marine Adhesive Sealant #5200, 10 Oz, White


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SKU: 10667989
MFG: 6500


3M Marine Adhesive Sealant 5200 is a one-component, high-strength, moisture-curing, gap-filling polyurethane for permanent bonding of wood, gelcoat and fiberglass. It cures to form a firm, rubbery, waterproof seal on joints and boat hardware, above and below the waterline.

  • Very high strength
  • Permanent bonding – above and below the waterline
  • Offers extended working time
  • Achieves handling strength in 48 hours
  • Tough and flexible polyurethane polymer forms strong bonds
  • Capable of retaining strong bonds during vibration, swelling, shrinking or shock
  • It cures to form a firm, rubbery, waterproof seal on joints and boat hardware, above and below the waterline.


  • Series: 5200
  • Packing Type: Cartridge
  • V O C Content: 40 g/l
  • Viscosity: 100000 - 500000 cPs
  • Form: Paste
  • Application Time: 30 hr at 70 deg F, 4 hr at 90 deg F
  • Functional Cure: 5 days
  • Media: Carbon Dioxide and Dry Chemical
  • Composition: Urethane Prepolymer Talc, Titanium Dioxide, Diethylene Glycol Monoethyl Ether Acetate and Zinc Oxide
  • Flammability Rating: 1
  • Specific Gravity: 1.36
  • Application Temperature: 40 - 100 deg F
  • Applicable Materials: Wood, Fiberglass, Gelcoat and Primed Metal
  • Application Method: Hand or Pressure Caulk
  • Shore Hardness: 68 Shore A
  • Base Type: Polyurethane
  • Tensile Strength: 700 PSI
  • Standards: OSHA 29 CFR 1910.1200
  • Capacity: 10 oz Gallon.

Tough and Flexible to Form Strong Bonds

  • Forming watertight seals, 3M Marine Adhesive Sealant 5200 offers permanent adhesion to wood, gelcoat and fiberglass. In addition, our marine adhesive sealant is flexible and allows for structural movement and dissipation of stress that may be caused by vibration, swelling, shrinking or shock.

Recommended Applications

  • Fiberglass deck to hull
  • Through hull fittings
  • Wood to fiberglass
  • Portholes and deck fittings
  • Motors on fiberglass transoms
  • Under moldings
  • Hull seams above and below water line
  • Deck housing

Combats Vibrations, Swelling, Shrinking and Shock

  • 3M Marine Adhesive Sealant 5200 is designed to meet the high demands of the marine environment, making it ideal for creating tough bonds resistant to saltwater and weathering. We formulated our sealant to provide an exceptionally strong solution for marine conditions as well as flexibility that combats vibrations, swelling, shrinking or shock. Once again, despite the barriers of a rough marine environment, 3M looked to science to provide a reliable, durable solution.
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