Donut Fender
The Donut Fenders are made of polyethylene foam with a polyurethane
elastomer shell. Special donut fenders have been specifically designed
to protect the berthing pipes of the vessels. The internal structure is
heavy duty, but it allows the rotation on the support pipe.
The polyethylene foam guarantees unsinkability even in case of
damage and ensures high energy absorption with low reaction force,
which is essential to eliminate the risk of damage to the hulls. They can
be purposely created for any pipe type and any pipe diameter.
- Corner protection.
- Lead-in jetties.
- Simple breasting dolphins.
- Turning structures.
- Bridge protection.

Donut Fender Characteristics
- Freely rotates around a pile.
- Superior energy absorb and low reaction force.
- Compression & recovery efficiency golden ratio.
- Extrely low hull pressure,non-marking polyurethane coating.
- Anti-burst,anti-sinking, ultimate security.
- Remain functions under accidental damage.
- Excellent anti-ultraviolet light (UV) resistance.
- Customization of fender size and shape.


Berthing Cases
SunHelm Marine's 20-year engineering legacy in marine fender systems encompasses cutting-edge pneumatic, foam-core, and solid rubber technologies, delivering scientifically optimized energy absorption and unmatched berthing safety for vessels of all sizes.

Foam Fender Construction


Heavy Duty Inner Tube
Galvanized heavy duty inner tube is the support and load-bearing structure. Its strength directly determines the service life of the fenders. Inner tube can be customized by requirements.

UHMW PE Pads
UHMW PE Pads (Ultra High Molecular Weight Polyethylene Pads) which has long-lasting, low-friction with minimal maintenance.

Closed Cell Foam Core (100%)
Due to the molecular structure of Closed Cell (Isolation of Gas), so the foam core can maintain excellent elasticity which is the basis of foam fender performance. Donut Fender utilizing only cross-linked, closed cell polyethylene.

Nylon Filament Reinforcement Layer
Donut Fender is constructed Continuous Tough and Thick Nylon Filament Reinforcement in Polyurethane skin which provides superior strength.

Corrosion Resistance Polyurethane
High performance Polyurethane skin: Anti-acid, Alkali and salt corrosion, Anti-UV resistant, Non-marking which makes the Donut Fender skin extremely durable to all types of weather, forces and marine conditions.

Heavy Duty Internal Structure
Heavy Duty Chain Connecting Swivel End Fitting Type (The internal chain guarantees maximum pull-through strength, even distribution of energy and stresses.) and Heavy Duty Internal Pipe Fixed End Fitting Type optional. All fittings are constructed of top-quality steel.
We have stock of pneumatic fenders in common sizes of STS.
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International Leading Donut Fender Manufacturer
SunHelm Marine Co., Ltd. is a Chinese manufacturer specializing in maritime products. SunHelm Marine currently has several large-scale modern factories and R&D centers. SunHelm Marine mainly produces pneumatic fenders, marine rubber fenders, foam fenders, hydro-pneumatic fenders, marine airbags, marine salvage airbag, caisson moving airbags and other products.
Based on ship industry chain, SunHelm Marine has expanded its market layout, main business involves ship mooring and berthing, marine engineering, port construction and other fields. SunHelm provides customers with systematic, comprehensive and creative services.
After nearly 20 years of development, product and technology applications have covered more than 80 countries and regions in 7 continents, NANHAI became the well-known brand in the world.
