TOZEN PTM-C spring vibration isolators consist of high deflection, laterally stable spring assembled into telescoping cast iron housings which are complete with a 8mm thick ribbed noise absorbing pad bonded to bottom and with internal or external adjusting and levelling bolt as a part of the top assembly. Holes or slots are provided in all isolators for bolting to the structure Model PTM-C spring isolator are designed with a preadjusted snubbing feature to reduce movement during start-up and shut-down. Tozen Model PTM-C spring isolators are typically used to isolate vibration produced by mechanical, industrial, or process machinery where more damping is required and less motion can be tolerated than with free standing spring isolators. APPLICATION Model PTM-C housed spring isolator mounts are used to isolate high and low frequency vibration generated by floor mounted mechanical equipment located in non-critical and semi-critical areas. Model PTM-C spring isolators are typically used to isolate the vibration produced by light weight mechanical equipment, having lowest operating speeds of 1,200rpm, located on grade supported slabs, or short structural floor spans, when the isolator to equipment connection is such that a levelling bolt can be extended above the mount and act as a levelling and attachment bolt for the supporting equipment. Model PTM-C isolators are available as Model PTM-CH which complete with tapped holes at the top loading plate for bolting to the supporting equipment. Internal levelling device is provided for height adjustment which is accessible through the side opening by means of an open end wrench. Model PTM-C isolators are available as Model PTM-CG which complete with non-skid rubber pad bonded at the top loading plate to eliminate the need for bolting down the supporting equipment. Internal levelling device is provided for height adjustment which is accessible through the side opening by means of an open wrench. Built-in adjustable snubber are available with Model PTM-CS isolators for high horizontal thrust application which are recommended for application under punch presses, drop hammers, clickers and other industrial equipments