NEW OEM LOT of 4 Yamada Double Air Diaphragm Pump O-ring 643027 28.2MM X 3.5 yp NOTE - You get what is seen. I think these are all for the NDP-5FST and/or the NDP-15 but may work with others also This is in great condition. From a govt. lab. I will put this in bubble mailer and ship USPS 1st Class. FREE USA SHIP / Will ship international.
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