Product Details
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

Company Profile
Shenzhen Huazhisheng New Materials Technology Co., Ltd. is a
leading provider of environmentally friendly adhesives and
technical solutions, specializing in the application of modified
silicone rubber, epoxy adhesives, thermal materials, bonding
adhesives, encapsulation adhesives, and UV adhesives across various
industries such as electronics, home appliances, LED lighting,
automotive, consumer electronics, rail transit, aerospace, and
electrical power. Huazhisheng New Materials adheres to the
corporate sustainable development strategy of "Progress,
Innovation, Professionalism, and Integrity," and integrates the
philosophy of "Quality, Efficiency, Environment-Friendly, and
Reliability" throughout the entire product lifecycle. Our products
have passed SGS, UL, FDA, DIN, and non-toxic certifications, and
have been awarded multiple global patents, making us one of the
primary suppliers of adhesives and new materials in China's new
energy, electronics, automotive, industrial, packaging,
environmental protection, construction, and high-speed rail
sectors.
With an innovative perspective, we offer customized solutions,
continuously develop leading technologies, and provide
comprehensive support to clients across various industrial sectors.
We are committed to collaborating with our clients to drive
industrial transformation and upgrading, ensuring your sustained
competitive edge.
Based on advancements in various polymer chemical materials,
Huazhisheng New Materials has established a leading position in
four key areas: coating, bonding, sealing, and thermal
conductivity. Our efficient and environmentally friendly adhesive
products and technical solutions help industrial enterprises
enhance production efficiency and benefits, protect your electronic
products from external chemical agents and harsh usage
environments, and extend their lifespan, ensuring continuous and
stable operation.