Rubber Cylindrical fenders

Cylindrical fenders, often called donut fenders, are rubber fender elements with a circular cross-section used in marine settings. They are designed to absorb and distribute impact energy between a vessel and a berth, quay, pontoon or other structure. As elastomeric components, they provide a resilient contact surface that reduces shock and abrasion to hulls and fixed structures. The term donut fender is commonly used to describe the same basic cylindrical profile.

Cylindrical fenders are used to protect vessels and marine infrastructure during berthing, mooring and vessel-to-structure contact. They provide a cushioning interface that reduces impact loads, prevents hull damage and limits wear on piers, pontoons and pilings. Typical uses include ship-to-berth operations, small craft docking points and any application where a resilient, rounded fender profile is required to absorb lateral and compressive forces.

The cylindrical profile gives these fenders a uniform contact surface and predictable deformation characteristics compared with flat or panel-style fenders. This shape can provide even load distribution and simple mounting options for both fixed and floating installations. Unlike some complex fender systems, cylindrical fenders are a straightforward solution where a rounded, resilient buffer is required. Selection should consider contact geometry, energy absorption needs and mounting method.

Maintenance for cylindrical rubber fenders typically includes regular visual inspection for surface damage, checking mounting hardware and attachments for corrosion or wear, and cleaning to remove debris, biofouling or contaminants. Damaged or excessively worn fenders should be repaired or replaced to maintain protective performance. For specific maintenance procedures, compatibility with cleaning agents and recommendations for inspection intervals, contact our team for technical advice.