Profile: Hi-Tech Gas Equipments & Hardware is a manufacturer and exporter of spares for industrial & oxygen/nitrogen gas plants. We offer an assortment of pistons and cylinders in customized configurations. Our pistons are developed using graded cast iron & aluminum alloys along with perfect machining. Various grades of piston rings/wearing rings are also available. Our piston/wearing rings are used in lubricated and non-lubricated compressor units. For lubricated compressor, we have individual cast iron piston ring that has 45 deg angle cut/glass filled PTFE. For non-lubricated unit, our range is available with thermoplastics, carbon filled PTFE, and bronze filled PTFE.