The MB Series are elastomer shock and vibration isolators used under HVAC, power generation  and electrical equipment where a seismic design is required. At maximum rated load, the natural frequency range of 12 to 15 Hz offers excellent isolation of structure-borne noise. 

The MB Series are also furnished as a complete assembly and feature a built-in leveling device for simple installation. The MB1 and MB3 housings are made of heat-treated cast aluminum, while the MB5 is manufactured from welded steel. All hardware consists of zinc-plated, carbon steel for superior strength and long-life.

The elastomer element resists oils, ozone and most solvents - providing optimum resilience in even the harshest environments. the MB Series works well in mechanical equipment rooms or on outdoor equipment platforms. The operating temperature of -20°F to +180°F offers continuous operation in ambient conditions.

Features & Benefits

  • Static load range from 30 to 1300 lbs. offers a wide range of application flexibility
  • Cast aluminum housing and carbon steel hardware provide durability in harsh environmental conditions
  • Natural frequency of 12 to 15 Hz at maximum load provides structure-borne noise attenuation in even the most challenging applications
  • Designed for seismic applications
  • Isolator shipped as a complete assembly for ease of installation
  • Built-in leveling device offers simplified equipment installation
  • Available with longer bolt for height adjustable installation


  • Air handling units
  • Fans
  • Pumps
  • Chillers
  • Air compressors
  • HVAC equipment
  • Power generation
  • Electrical transformers
  • Motors




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.