CECO Environmental Effox-Flextor-Mader


ISO 9001 and 14001 CERTIFIED

Rubber Flanged Versatile

Style 9100 & 9101

General Rubber’s Style 9101 completely versatile ducting rubber expansion joint is designed with an integral arch in a hand wrapped construction. This results in lower spring rates for reduced reaction forces and greater movement capabilities within a compact body. This optimally designed lightweight construction represents the most versatile arrangement for even the most demanding ducting applications. The versatile hand-built construction includes full rubber flanges, a high-grade leak-proof tube, a seamless cover, multiple layers of high-strength tire cord and steel retaining rings. Additionally, they are available in multiple arches for increased movements and decreased spring rates as well as custom offsets and reducing arrangements. They are also designed to absorb large all-directional movements, reduce noise and vibration, have a cycle life in the tens of millions, compensate for misalignments, provide access to ducting and equipment and relieve duct and anchor stresses.


  • Versatile hand-built construction
  • 250°F continuous service standard (400°F available)
  • ± 3 PSI continuous service standard (25 PSI available)
  • Round or rectangular designs in all sizes
  • Available in multiple arches for greater movements and reduced spring rates
  • Available in custom offsets and face-to-face dimensions as well as reducing arrangements
  • Simple to install, lightweight and high-strength
  • Carbon steel, stainless steel, or hot dip galvanized backup rings
  • Zero porosity in wet or dry service
  • No gaskets required
  • Excellent chemical and abrasion resistance


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