Rubber Expansion Joints


Rubber joints consist of a rubber bellows element fitted usually with fixed or floating (swivel) flanges, or pipe unions to facilitate quick installation into a piping system.

The rubber bellows can be supplied in a wide range of rubber synthetic compounds including EPDM, neoprene, nitrile, butyl, Hypalon and Viton, generally reinforced with a fabric or wire insert. The flanges can be supplied in zinc plated steel, hot dip galvanised steel or stainless steel.

The RADCOFLEX range covers from the moulded spherical style to complex hand-built wide arch styles with integral flanges.

RADCOFLEX rubber expansion joints are in accordance with the guidelines of the Fluid Sealing Association (FSA) Non-metallic Pressure Piping Expansion Joints.

FSF - Single Sphere


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

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.

Suitable for Axial, Lateral or Angular movements. 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.


Nominal Bore
32 - 750mm

Material Types
Various Types Available

Positive Pressure
758 - 1600 kPa

Negative Pressure
600 mm H.g

FTF - Twin Sphere


A flexible joint made of heat resisting synthetic elastomers and moulded in a twin sphere shape with vanstoned metal floating flanges, pipe unions or threaded mating flanges.

Ideal for applications requiring large axial, lateral and angular movements. Industries include shipbuilding, power generation, chemical plants and buildings.

Style FTF joints are not capable of absorbing more than one movement at a time (i.e. non-concurrent), nor absorbing torsional (i.e twisting) movement.


Nominal Bore
32 - 750mm

Material Types
Various Types Available

Positive Pressure
758 - 1600 kPa

Negative Pressure
600 mm H.g

WA - Wide Arch


A joint with a long flowing (wide) arch made of heat resisting synthetic elastomers moulded into a spherical shape with one-piece bonding of the two flanges through the arch providing maximum flange joint integrity.

Manufactured from heat and chemical resisting elastomers of special composition reinforced with tough nylon fibre cord. An extra thick elastomeric tube offers superior performance in harsh applications.

The arch is self flushing making it ideal for slurries. The wide arch reduces turbulence eliminating the need for a ‘filled arch’ type joint. The integral bonded flange faces provide a full face seal to the matching pipework flanges, and can be reinforced with split metal reinforcing flanges.


Nominal Bore
25 - 750mm

Material Types
Various Types Available

Positive Pressure
620 - 1516 kPa

Negative Pressure
660 mm H.g