VMC Group RB Ring and Bushing Elastomeric Isolator is a ring and bushing-type, elastomeric shock and vibration isolator designed for a variety of load ranges. The ring and bushing design provides superior wear resistance for applications where difficult shock and vibration conditions exist. They are commonly found in off-highway construction equipment.

The RB Ring and Bushing Elastomeric Isolator provides a low profile mounting that is a failsafe restraint when used with the recommended snubbing washer. A low frequency of 10 to 12 Hz at maximum load attenuates structure-borne noise in even the most challenging applications.

The structural sections are made of carbon steel for excellent strength and durability. A corrosion-resistant coating on all metal surfaces ensures long component life. The elastomeric elements resist oils, ozone and most solvents - providing optimum resilience in nearly all environments. The operating temperature of -20⁰ to +180⁰ offers continuous operation in varying weather conditions.

Features & Benefits

  • Low profile design provides installation in space-restricted applications
  • Low natural frequency of 10 - 12 Hz at maximum load provides structure-borne noise attenuation in difficult applications
  • Corrosion-resistant coating on all metal surfaces ensures durability in most environmental conditions
  • Failsafe design when used with snubbing washers


  • Dozers
  • Loaders
  • Graders
  • Compactors
  • Combines
  • Sprayers
  • Articulated haulers
  • Other construction and agricultural equipment




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.