Eversafe Pneumatic Fenders| Yokohama type fenders|Floating fenders| Comply with ISO17357

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Pneumatic Rubber Fenders

Pneumatic fender is a kind of anti-collision device for marine operations in the world today. Those fenders are made of synthetic-cord-reinforced rubber sheet with compressed air inside to enable it to float on the water and work as a protective medium. Therefore, pneumatic rubber fenders serves as a critical protective medium against collision when ship-to-ship (STS) transfer operations and ship-to-dock (STD) berthing and mooring operations.

Eversafe Pneumatic Fenders have the advantages of massive energy absorption with low unit surface pressure acted upon the ship. So pneumatic fender has become an ideal ship protection medium used extensively by large tankers, LPG vessels, ocean platforms, bulk carriers and floating structures, large docks, harbor and wharfs.


Our Advantages
Eversafe Pneumatic fenders accord with ISO 17357:2002
Eversafe Marine provide total pack of pneumatic fender design, installation and supply. Eversafe Pneumatic fenders are China Oil and Gas companies and Navy appointed exclusive fender products.

Initial Internal Pressure Rating
There are two initial pressure rating for Eversafe Floating Pneumatic Rubber Fenders:
a) Pneumatic 50 (Initial internal pressure 50 kPa)
b) Pneumatic 80 (Initial internal pressure 80 kPa)
Fender Type
There are two types for EversafeFloating Pneumatic Rubber Fenders:
a) Net-type Fenders
The fender is covered by a protection net consisting of either chain, wire or fiber and usually with tires or rubber sleeves.
b) Sling type
The fender is designed to be used without a protection net. It’s easy to handle with because of their light weight.

Eversafe Pneumatic Rubber Fenders are available from 500x1000mm to 3300x6500mm, including all the standard and no-standard specifications.

Construction Features
Floating pneumatic rubber fenders, whose basic body construction consists of outer rubber layers, synthetic-cord-reinforced rubber layers and inner rubber layers, are kind of cylindrical air bags with hemispherical heads at both ends.


The outer rubber layer that covers the outside of fender protects the cord layers and the inner rubber from abrasion and other external forces. This compound has sufficient tensile and tear strength to withstand any weather condition and hard usage. Standard color is black, but other colors such as grey and creamy white are available on request.

The reinforcement cord layers, which are made of Synthetic-tire-cord commonly used in tires, are arranged at ideal angles to hold the internal pressure and to distribute the stress evenly providing strong efficient reinforcement. Synthetic-tire-cord layers, commonly used in tires, have been proven to provide strong efficient reinforcement layers in fenders; each single layer is coated with rubber compound on both sides as well as in between synthetic-tire-cord threads, hence isolating all cords from each other. 
As contact between synthetic-tire-cord threads does not occur, synthetic tire cord has the advantage over other reinforcement materials such as canvas fabric of reducing friction and wears between cord threads during compression, bending and stretching, and also greatly improves fatigue resistance, endurance life, and pressure-holding performance.
Inner Rubber membrane seals the pressurized air inside the fenders.

Test methods
Mainly base on ISO 17357 include Dimensional Inspection,Air-leakage Test,Hydrostatic-pressure Test, Pressure Relief Valve Test.
For rubber material test please refer to the following chart.

 Outer and inner rubber material requirements
Test item
Test method
Required value
Out rubber
Inner rubber
1. Before ageing
1.1Tensile strength
ISO 37:1994
18 MPa or more
10MPa or more
1.2 Elongation
ISO 37:1994
400% or more
400% or more
1.3 Hardness
ISO 7619:1997
60 ±10
(Durometer hardness Type A)
50 ±10
(Durometer hardness Type A)
2. After ageing
ISO 188:1998
Air oven ageing, 70±1 96h
Air oven ageing, 70±1 96h
2.1Tensile strength
ISO 37:1994
Not less than 80% of the original property
Not less than 80% of the original property
2.2 Elongation
ISO 37:1994
Not less than 80% of the original property
Not less than 80% of the original property
2.3 Hardness
ISO 7619:1997
Not exceed original property more than 8
Not exceed original property more than 8
3. Tear
ISO 34-1:1994
400 N/cm or more
No requirement
4. Compression set
ISO 815:1991
30% (70±1 for 22h) or less
No requirement
5. Static ozone ageing test
ISO 1431-1:1989
No cracks after elongation by 20% and exposure to 50 pphma at 40 for 96 h
No requirement
NOTE: If the color of pneumatic fender is not black, the material requirements will differ from those listed in this table
apphm: Parts of ozen per hundred million of air by volume.

 Performance Table