3M 5200 Marine Adhesive Sealant with Permanent Waterproofing UV Resistance and High Flexibility for Boats

3M 5200 is a single-component, moisture-curing polyurethane adhesive sealant designed for permanent bonding in marine environments. It offers high strength, flexibility, and resistance to saltwater, UV, and vibrations. Available in fast-cure (5200 FC) and slow-cure variants, it cures to form a waterproof seal that withstands submersion above and below the waterline. Standard packaging includes 295 mL tubes (12 tubes/box) or 88.7 mL sausages, with a shelf life of 24 months

3M 5200 is engineered for demanding marine applications, providing a durable and flexible bond between materials like wood, gel coat, fiberglass, and metals. Its unique polyurethane formulation reacts with moisture to create a resilient seal that absorbs stress from expansion, contraction, and impact. Ideal for both manufacturing and repair, it ensures long-term performance in harsh oceanic conditions

1. Permanent Waterproofing: Forms a watertight barrier even under continuous submersion, resisting saltwater corrosion and hydrolysis
2. Stress Resilience: Maintains adhesion despite vibration, thermal expansion, or structural movement (elongation >900%, tensile strength ~600 psi)
3. Rapid & Slow-Cure Options:
   • Fast-Cure (FC): Tack-free in 1–2 hrs, full cure in 24–48 hrs
   • Slow-Cure: Tack-free in 48 hrs, full cure in 5–7 days
4. Certified Durability: Shore A hardness of 60, with 95% solid content ensuring no shrinkage

3M 5200 is critical for marine structural bonding and sealing:

Hull & Deck Seams: Seals fiberglass deck-to-hull joints against water ingress.

Through-Hull Fittings: Waterproofs penetrations for sensors, transducers, or plumbing.

Hardware Installation: Bonds windows, cleats, and motor mounts to fiberglass/wood substrates.

Below-Waterline Repairs: Permanently fixes propeller struts, keels, and rudder posts

1. Who are we?

We are Shenzhen Huazhisheng New Material Technology Co., Ltd., a professional industrial adhesives and sealants supplier based in China since 2018. we serve global markets: Mainland China (60%), Southeast Asia (20%), North America (10%), and Europe (10%).

2. What products do you offer?

we supply high-performance adhesives and sealants from global leaders including:

Cemedine, Dow Corning, Shin-Etsu, Araldite, and Momentive,etc.

3. How do you guarantee product quality?

Quality assurance through:

Mandatory pre-production samples approval

Final inspection by QC team before shipment

International certifications: SGS, UL, FDA, RoHS, REACH

4. Why choose us over other suppliers?

Reliable Supply:Authentic products from top manufacturers

Expert Support:Technical guidance for product selection

Global Compliance:Certifications meeting target market standards

Efficient Service:Customized solutions & professional support

5. What services do you provide?

Delivery:EXW/FOB/CIF

Payment:USD/EUR/CNY/HKD via T/T, L/C

Support:Technical consultation & logistics coordination