3.1 outer rubber
rubber layer that covers the outside of the fender to protect the cord layers and the inner liner rubber from abrasion and other external forces
3.2 inner rubber
liner of a rubber membrane that seals the pressurized air inside the fender
3.3 synthetic-tyre-cord layer for reinforcement
layer made of synthetic-tyre-cord fabric, which maintains the internal air pressure of the fender. As the main fibres of the synthetic-tyre-cord fabric are not braided like synthetic canvas fabric or synthetic belt fabric, there are advantages for its fatigue-resistance performance and pressure-holding performance.
3.4 Air Valve and Safety Valve
Medium and small sized Floating Yokohama Type Pneumatic Rubber Fenders are equipped with a small air valve, which is the same in size and construction as the air valve of an automobile tire. This valve serves as both air-check, air charge and release valve. On the large size fenders a big valve and a safety valve are equipped, the big valve serves for an air-charging and release, and the safety valve serves for releasing excess internal pressure when the fender is accidentally over compressed.
3.5 bead ring
steel ring which is placed at one end (or both ends) of the fender and holds the end of cord layers
3.6 flange opening
steel flange which is mounted on the fender, to which an air valve or safety valve can be adapted
3.7 fender cage
Fender cage covers the outer rubber layer to protect the whole fender body, the fender cage has various versions which also distinguish the fender type.
3.8 towing ring
Towing ring is connected to opening flange and combine the fender cage for easy lifting and moving. It is often connected with additional end shackle and swivels.