This is the Pfeiffer Part# PMK028 Major Overhaul Kit for the DUO 255M (Index C) vacuum pump. This complete kit includes everything you need for a full pump rebuild: vanes, springs, seals, O-rings, valves, bearings, gaskets, coupling, sight glass, and more. Following Pfeiffer’s recommended 4-year maintenance schedule, this kit restores your pump to like-new condition.
This is the Pfeiffer Part# PSK028 Seal Kit for the DUO 255M (Index C) vacuum pump . This comprehensive kit includes 21 different sealing components such as O-rings, shaft seals, gaskets, and valve seats . Designed specifically for the DUO 255M, this kit provides everything you need to restore the sealing integrity of your pump during routine maintenance.
This Rotex 55 spider coupling (Part # 0512000116) is a elastomeric insert designed for KTR Rotex Size 55 jaw couplings . Made from high-strength T-PUR material with 92 Shore A hardness, this orange spider sits between the coupling hubs to transmit torque, dampen vibrations, and compensate for minor shaft misalignments . It is ideal for use with vacuum pumps driven by electric motors where reliable, low-maintenance power transmission is required.
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