Specialty shock and vibration control products are specialty or proprietary products and accessories related to shock and vibration absorption. They use one or more unique technologies. Examples include elastomeric products, composite and rubber-based materials (rubber bumpers), dashpots, ferromagnetic fluids, shock absorbers, mechanical springs, extensional damping systems, electromechanical actuators, active vibration control systems, and mass dampers. Other types of specialty shock and vibration control products are also available.