Low Pressure Applications Rubber Expansion Joint

This multi-convoluted, lightweight expansion joint is designed for low pressure applications that require significant amounts of movement, axially and/or laterally. Its low spring rates make it ideal for air handling, load cell, bin activators, vibrating bins, silos, and pellet/dough hopper applications.

Regional Availability Restrictions: 
Not available in Europe


  • Lightweight design installs easily and costs less to ship
  • Can be custom-designed for even greater movement capability
  • Choice of construction materials suitable for wide range of temperatures
  • Available in flanged or sleeve type design, up to 48in / 1219 mm ID

NOTE: Flanged designs require retaining rings for an effective seal. Sleeve type requires clamps; the overall length of the expansion joint should include an additional 4in / 101.6 mm for clamping space.



  • Without external reinforcing rings: up to 3 psi / 0.2 bar
  • With external reinforcing rings: up to 15 psi / 1.0 bar


  • Without internal reinforcing rings: up to 3 in Hg / 75 mm Hg
  • With internal reinforcing rings: up to 15 in Hg / 381 mm Hg
  • Contact Garlock if higher vacuum or pressure ratings are required


  • Air handling
  • Load cell
  • Bin activators
  • Vibrating bins
  • Silos
  • Pellet/dough hoppers


For more info on these materials click here.

  • ABRA-LINE™: +180°F  (+80°C)
  • ABRA-SHIELD™: +300°F (+150°C)
  • Natural Rubber: +180°F (+80°C)
  • FKM (Fluoroelastomer): +400°F (+205°C)
  • CSM: +250°F (+120°C)
  • EPDM/FDA EPDM: +300°F (+150°C)
  • HNBR (Hydrogenated Nitrile): +300°F (+150°C)
  • Nitrile/FDA Nitrile: +250°F (+120°C)
  • Chlorobutyl (Standard): +250°F (+120°C)
  • Neoprene/FDA Neoprene: +250°F (+120°C)


Movement Capabilities

  • 3/4in / 19 mm axial compression per convolution
  • 5/8in / 16 mm axial elongation per convolution
  • 5/8in / 16 mm lateral deflection per convolution
  • Movements are non-concurrent. Larger convolutions are available to provide more movement. Contact Garlock if above listed movements need to be exceeded.


Find SDS and MSDS Documents