Expansion joints

Rubber Expansion Joints

Available materials for highFLEX SFR rubber expansion joints:

  • Neoprene
  • EPDM
  • Butyl
  • Nitrile
  • Hypalon®
  • Viton®
  • Natural rubber
  • It is also possible to combine different elastomers as inner and outer layers for individual expansion joint types

Possible designs:

  • Sealing surface for rotating flanges, both ends with hardened steel insert
  • Loose-type flange with groove according to DIN PN 10/16 or ANSI 150 lb
  • Full-face elastomer flanges with fabric reinforcement
  • Counterflanges with support collar
  • Female thread connection for DN 15 - 80 mm
  • Length limiters (tie rods)
  • Special tie rods for lateral expansion joints
  • PTFE inner liner
  • Vacuum support rings/spiral supports

easyFLEX tailor made expansion joints:

These expansion joints are specifically designed for materials handling and weighing applications. They are characterized by low adjustment forces with high pressure resistance/resistance to pressure surges.

Materials (examples):

  • Silicone rubber – white, red or black
  • EPDM
  • Fluoroelastomer (Viton®)

Inserts (reinforcements – examples):

  • Polyester fabric
  • novaTEX® woven fabric (aramid/Kevlar®)
  • isoGLAS® woven fabric

Support rings:

  • Internal stainless steel rings
  • Stainless steel rings bounded to elastomer

Flange design:

  • Full-face rubber flanges – unpunched, punched
  • Different connection flanges / bolt hole pattern
  • Conical shape
  • Transition from round to angular

Application examples:

  • Handling of plastic granulate
  • Scales for coal dust and toner
  • Transportation of color pigments

Viton®, Hypalon® and Kevlar® are registered trademarks of DuPont.