Ocean Guard Donut Fenders

As professional donut fender suppliers, Hongruntong Marine provides Shibata donut fender, Ocean Guard donut fender, floating donut fenders & standard donut fenders—durable for marine, port & offshore protection.

Hongruntong Marine stands out as reliable donut fender suppliers with over 35 years of expertise in circular marine protection solutions. We focus on delivering high-performance donut fenders tailored to global marine needs, including three core product lines: authentic donut fender (following iconic “ring” design for proven reliability), heavy-duty Ocean Guard donut fender (engineered for overload impact), and buoyant floating donut fenders (solving drifting/sinking pain points in rough seas).

As one of the globe's trusted donut fender suppliers, we specialize in providing robust mooring solutions. Our portfolio features the industry-respected donut fender and our own premium Ocean Guard donut fender line. These floating donut fenders are engineered for maximum energy absorption and unparalleled durability in the world's most challenging maritime environments. We deliver superior donut fenders directly from our manufacturing partners to your port or vessel.

Features & Benefits

• Superior Floating & Energy Absorption: The unique donut shape provides a large contact area and excellent energy dissipation, making our floating donut fenders ideal for high-impact berthing and mooring applications.

• Exceptional Durability: Manufactured from top-grade rubber compounds, both the Shibata donut fender and Ocean Guard donut fender offer outstanding resistance to abrasion, weathering, ozone, and UV radiation, ensuring a long service life.

• Low Maintenance & Reliability: Designed for zero-maintenance operation, our donut fenders perform reliably season after season, eliminating the worries of deflation or waterlogging associated with other fender types.

• All-Weather Performance: Consistent performance across a wide temperature range guarantees optimal protection for your assets, from tropical heat to freezing Arctic conditions.

Typical Applications

• Marina and yacht club berths

• Tender and dinghy protection on larger vessels

• Workboats, pilot boats and harbour service craft

• Floating pontoons, walkways and temporary mooring points

• Retrofit protection for confined berthing spaces

Technical Specifications

Generic Performance Curve

Detailed Photos

Our Advantages as Your Supplier

• Strategic Product Range: We provide access to leading brands like the donut fender alongside our cost-effective, high-quality Ocean Guard donut fender, giving you flexible choices.

• Global Supply Chain Expertise: As experienced donut fender suppliers, we guarantee efficient logistics and on-time delivery to your project site, anywhere in the world.

• Technical Advisory: Our team offers expert guidance to help you select the correct donut fender size and type for your specific energy absorption and berthing angle requirements.

• Competitive Sourcing: We leverage our manufacturing relationships to provide you with the best value floating donut fenders on the market without compromising on quality.

Quality Assurance & After-Sales Service

As responsible donut fender suppliers, we take quality seriously:

• 5-Step QC Process: Raw material testing (rubber density/cord strength) → semi-finished product airtightness check → impact simulation → dimension verification → final performance test (100% inspection for all fenders).

• Warranty Coverage: 5-year warranty for donut fender and Ocean Guard donut fender; 3-year warranty for floating donut fenders and standard models (covers manufacturing defects, not artificial damage).

• 24/7 Support: Technical hotline for urgent issues (e.g., offshore fender damage); supply replacement parts (slings, valves) at cost price; annual maintenance guidance for long-term users.

Ordering, Lead Time & Delivery

• Quotation: provide required diameter, wall thickness, quantity and preferred fittings.

• Lead time: depends on size and customization; standard small units commonly available with short lead times, larger or custom units subject to production scheduling.

• Packing & shipping: export-grade packaging and logistics coordination for safe worldwide delivery.

Frequently Asked Questions

Q1: What are the advantages of the triple-layer construction?
A: The closed-cell foam provides permanent buoyancy, the nylon layer distributes impact forces, and the polyurethane outer shell offers exceptional abrasion resistance. Together, they create a fender that outperforms traditional single-material designs.

Q2: How does the polyurethane outer shell compare to traditional rubber?
A: Polyurethane offers 3-4 times better abrasion resistance than rubber, better UV resistance, and maintains flexibility across a wider temperature range while being lighter in weight.

Q3: What is the expected service life of these fenders?
A: Typically 10-15 years in normal service conditions, though many installations have exceeded 20 years with proper maintenance and care.

Q4: Are custom sizes and configurations available?
A: Yes, we offer complete customization services including special sizes, alternative mounting configurations, and custom colors.

Q5: How are these fenders installed?
A: Installation is straightforward using standard marine hardware. We provide detailed installation manuals and can supply custom mounting hardware if required.

Q6: What maintenance is required?
A: Only periodic visual inspection and occasional cleaning with fresh water. No specialized maintenance or pressure monitoring is needed.