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Leading Flexible Hose & Expansion Joint Manufacturer & Supplier


Style FSF Single Sphere

A flexible joint made of heat resisting synthetic elastomers and moulded in a spherical shape with vanstoned metal floating flanges.

Principal Applications
Ideal for air conditioning and sanitary equipment, pumps, refrigerators, blowers, marine piping systems, feed water,
drainage systems and such industries as chemical plants, shipbuilding, power generation, building and waste disposal plants.

Movement Capabilities
– Axial
– Lateral
– Angular
Style FSF joints are not capable of absorbing more than one movement at a time (i.e. non-concurrent), nor absorbing torsional (i.e twisting) movement.

Manufactured from heat and chemical resisting elastomers of special composition superior to natural or chloroprene rubber, reinforced with tough nylon fibre cord. The moulded vanstone flange has imbedded in its wall a high tensile steel wire to ensure rigidity.

Material Type Options
Type BB – (Outer) Chloro Butyl – (Inner) Chloro Butyl
Type EE – (Outer) EPDM – (Inner) EPDM
Type NH – (Outer) Neoprene – (Inner) Hypalon
Type NN – (Outer) Neoprene – (Inner) Neoprene
Type NP – (Outer) Neoprene – (Inner) Nitrile (Buna-N)

Size Range
Style FSF – 32mm (1 1/4″) – 600mm (24″)
Style FSFA – 25mm (1″) – 750mm (30″)
Style FSFB – 32mm (1 1/4″) – 300mm (12″)

Joint Lengths
The moulded spherical rubber expansion joints are available in three ranges of lengths. These three ranges are identified as styles FSF, FSFA and FSFB as per the attached specifications.

Although there is no specific standard on the lengths the styles are generally used in different parts of the world as follows:
Style FSF – Asia, Australasia, Japan, Pacific
Style FSFA – Americas
Style FSFB – Europe

Pressure & Vacuum
Style FSF – 860kpa – 1600kpa (Positive) – 600mm H.g (Vacuum)
Style FSFA – 758kpa – 1600kpa (Positive) – 600mm H.g (Vacuum)
Style FSFB – 1600kpa (Positive) – 600mm H.g (Vacuum)