HSO Series Spring Hangers are designed to isolate low frequency vibrations in locations where there is minimal space available - such as in suspended mechanical equipment room applications.

HSO Series Hangers are unhoused spring isolators that are laterally stable. The series incorporates a color-coded steel spring along with spring cups and elastomeric washers. The HSO Series are installed directly below suspended mechanical equipment, clevis or trapeze hangers, or directly above a steel support beam.

Features & Benefits

  • Color-coded springs provide easy identification of isolators for installation and inspection
  • Freestanding spring isolators offer installation in minimal space


  • Suspended piping
  • Suspended electrical services
  • Suspended equipment
  • Suspended ductwork


Spec Sheets

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The engineers we employ hold the highest industry-recognized credentials in structural analysis, elastomer development and system dynamics.


We are the first ISO accredited PCA ISO-17065, third-party certification body for special seismic certification of non-structural building components and their mounting configurations by the ICC’s International Accreditation Service.

Test & Measurement

We are the only ISO 17025:2005 Accredited Seismic Simulation Test Laboratory with a triaxial shake table owned and operated by California licensed Structural engineers.

Testing Services Update
DCL now offers Nuclear Qualification and Testing services.

In partnership with Greenberry Industrial, we now offer testing services that meet the requirements of ASME NQA-1.

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