AMSR Series Isolators have a unitized, adjustable open-spring isolator and a welded steel housing designed to resist seismic forces in all directions. Restraint surfaces which engage under seismic motion are cushioned with a resilient elastomer to protect equipment. The AMSR has a shipping block when installed internally to OEM equipment for protection during shipping.  AMSR Series Isolators with a shipping block are available in deflections up to 4 inches.

Features & Benefits

  • Rugged steel housing serves as blocking during equipment erection
  • Housing offers no difference in elevation between installed and operating height
  • Installation spacer ensures accurate installation height and adjustment
  • Top plate may be welded or bolted to equipment – allowing flexible design options
  • Housings are identical in height within each series
  • Easily accessible bolt holes permit simplified installation
  • Elastomeric acoustical cup eliminates high frequency vibrations
  • Color-coded springs permit ease of identification of load capacity
  • The shipping block and bolt allows the manufacturer to mount the unit fans on isolators, the isolators to be adjusted, and the complete assembly to be locked down for shipping
  • After equipment is installed, the installing contractor removes and discards the shim and bolt


  • HVAC equipment (internal isolation)
  • Air handling units
  • Fans
  • Pumps
  • Chillers
  • Condensing units
  • Engine gensets




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.

Call for more information.