VMC Group RSM Series Isolators are fully bonded, failsafe elastomeric isolators designed to provide shock and vibration isolation for a variety of marine applications in the medium to heavy load range. Offered in two designs - the RSM1 Series offers low load ranges and the RSM3 Series offers load ranges up to 1,300 lbs.

The RSM Series also are furnished as a complete assembly for simple ordering and installation. The isolator is manufactured of a ductile iron outer housing for failsafe or heavy-duty applications. The series provides an extremely durable construction that includes zinc-plated, carbon steel hardware and corrosion resistant coating on all metal surfaces.

The elastomer elements resist oils, ozone and most solvents - providing optimum resilience in even the harshest environments. Failsafe snubbing washer provides for mobile and all-attitude applications. The operating temperature of - 20°F to + 180°F offers continuous operation in all environmental conditions.

Features & Benefits

  • Wide choice of load ranges provides isolators that can be matched to strict engineering requirements
  • Choice of ductile iron or cast aluminum housings permit use in heavy-duty applications or where weight is a consideration
  • Failsafe snubbing washer provides for mobile and all-attitude applications
  • Low natural frequency of 8 Hz at maximum load provides structure-borne noise attenuation in even the most challenging applications
  • Typical damping ratio of C/Cc = 0.1 transmissibility approximately 5:1 at resonance
  • Offers an axial to radial stiffness of 1:3.5


  • Propulsion
  • Guidance
  • Radar
  • Sonar
  • Other sensitive systems




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.