Viscous isolator with air spring

A vibration isolator comprising:

• a cylindrical housing forming an internal cavity;
• an elastomeric diaphragm within the internal cavity, the elastomeric diaphragm combining with a first end of the housing to form an air spring within the internal cavity;
• a mechanical coil spring in series with the air spring within the internal cavity;
• a metal mount in series with the mechanical coil spring opposite the air spring;
• an annular elastomeric stopper between a second end of the housing and the mount, wherein the mount and the annular elastomeric stopper combine to seal the second end of the housing to form a chamber within the internal cavity between the elastomeric diaphragm and the second end of the housing;
• a first plate seated on the mount within chamber;
• a second plate adjacent the second end of the housing, the second plate being fixed relative to the housing and dividing the chamber into a first portion and a second portion, the first portion including the first plate and the mechanical coil spring and the second portion including a portion of the mount,
• wherein the mount extends into the first portion of the chamber to contact the mechanical coil spring.