ERV-Rubber expansion joint Type 1 Construction type R

The HKS rubber expansion joint Type 1 Construction type R is suitable for water, drinking water (certifications DVGW W 270 and ACS), cold and warm process water, sea water, coolant (also with chemical additives for water treatment), weak acids and alkalis, saline solutions, technical alcohols, esters and ketones.

HKS type 1 rubber expansion joint, R model, with rotatable galvanised steel flanges with support collar
HKS rubber expansion joint type 1 model R
Composition and qualities
Nominal widths
  • DN25 to DN1000
Tempature range
  • (medium dependent) -40 °C to +100 °C
  • briefly to +120 °C
Inner liner
  • Butyl (IIR) / EPDM
  • seamless
  • poor diffusion
  • PA textile cord
  • rubberised butyl
Outer liner
  • EPDM
  • ozone resistant
  • heatproof

Electrical Properties

  • electrically conductive
  • red ring
  • DN ..
  • PN ..
  • date of manufacture
  • hinged
  • DIN PN 10/16
  • steel (S235JR)
  • galvanised
  • integrated rubber bead (self-sealing)