Expansion joints

  • Construction of an expansion joint

    Construction of an expansion joint

  • Expansion joints

    Plant engineering: Many operators use the products as standard equipment in their designs.

  • Expansion joints

    Petroleum: Our special rubber compounds offer maximum resistance to oils and fuels. Compensators are used in road tanker production, but are also in underground tank installations at service stations to offset the effects of ground settling.

  • Expansion joints

    Building technology: Our special rubber compounds offer maximum resistance to oils and fuels. Compensators are used in road tanker production, but are also in underground tank installations at service stations to offset the effects of ground settling.

  • Expansion joints

    Shipping: Rubber expansion joints were originally developed for the shipbuilding industry in the 1950s. They suppress the vibration and noise generated by motors, pumps and generators on board and allow for easy installation of piping components.

Rubber Expansion Joints / Connecting Pipes

Whether in shipbuilding, building services engineering, the mineral oil industry or in aggregate, equipment, and power station construction – the rubber expansion joints from ContiTech Air Spring Systems reduce tension, isolate noise and vibrations, absorb thermal expansion or building settlement movements, and compensate for misalignments in installation. We develop products for a wide range of different scopes.

Flexible member designs

The range covers various different flexible member designs that have distinctive product characteristics, flexible member geometries, and flange designs.

Sizes

DN 25 to DN 3600 (25 mm to 3,600 mm) in different design lengths.

Operating pressure

PN 2.5 to PN 25 (2.5 bar to 25 bar), depending on the dimension and version.

Temperature range

The permissible operating temperature range is between -50°C and +130°C depending on the medium and elastomer quality.

Application possibilities and advantages of rubber compensators

  • Absorption of thermal expansion
  • Vibration damping and noise isolation
  • Reduction of tension in piping
  • Equalization of assambly inaccuracies
  • Equalization of structural settling
  • Installation assistance for piping segments

Rubber qualities
Rubber Expansion Joints / Connecting Pipes

Butyl

Elastomer quality for drinking water with approvals in compliance with the Elastomer Guideline, ACS, and WRAS. It can also be used for oil-free wastewater, compressed air (oil-free), weak acids and alkalis, and special chemicals.

Butyl

NR/BR

Special quality for abrasive media such as muds, granulates, and liquids with solid content.

NR/BR

CSM

For acids, alkalis, chemical wastewater (chemical-resistant), and compressor air containing oil.

CSM

CR

Standard quality for cold and warm water, seawater, and wastewater (e.g. also slightly acidic, alkaline, or containing oil). Also suitable in part for oils and greases.

CR

EPDM

For oil-free chemicals, continuous stress due to hot water, air, and high temperature resistance. TÜV-certified for heating systems as per DIN 4809.

EPDM

FKM

High-tech quality for abrasive media loads as well as fuels with an aromatic compound content of more than 50%, and good resistance to chemicals.

FKM

HNBR

Resistant to mineral oils and fuels, lubricants and hydraulic oils, and cooling water with corrosion protection containing oil. Very good resistance to ozone.

HNBR

NBR

For mineral oils, fuels, fuel-ethanol mixtures, solvents, and greases. Not suitable for steam and hot water.

NBR

NBR white

Elastomer quality for foodstuffs in compliance with RAL directive, oily and greasy foods and, for example, mash, juices, and wines, as well as desalination.

NBR white

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