3M 5200 Marine Adhesive Sealant: Superior Waterline Bonding Solution for Boats
Product Basic Properties
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
Product Introduction
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
Special Properties
- Permanent Waterproofing: Forms a watertight barrier even under continuous submersion, resisting saltwater corrosion and hydrolysis
- Stress Resilience: Maintains adhesion despite vibration, thermal expansion, or structural movement (elongation >900%, tensile strength ~600 psi)
- 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
- Certified Durability: Shore A hardness of 60, with 95% solid content ensuring no shrinkage
Application Scenarios
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
Technical Parameters
| Property | Value | Test Standard |
| Form | Medium-viscosity paste | N/A |
| Cure Time (Fast-Cure) | 1–2 hrs (tack-free), 24–48 hrs (full) | ASTM D412 |
| Shore Hardness | 60 A | ASTM D2240 |
| Tensile Strength | 600 psi | ASTM D412 |
| Elongation at Break | >900% | ASTM D412 |
| Solid Content | 95% | Gravimetric |
| Operating Temp Range | -54°C to +82°C | MIL-S-23586C |
| Water Resistance | Permanent submersion | ISO 2812-2 |
| Package Size | 88.7 mL / 295 mL | N/A |
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
