[Original] Pompa Diafragma ARO Repair Kits - Air Section
EXP SeriesAir Section Service Kit includes gaskets, 'O' rings, 'U' cups and the Simul-Shift® valve guaranteeing an ultra-positive, reliable shift signal that avoids stall-out.
PRO SeriesAir Section Service Kit includes the proper gaskets, 'O' rings and 'U' cups needed to complete standard maintenance repair.
https://www.arozone.com/en/products/diaphragm-pumps/diaphragm-pump-accessories/diaphragm-pump-service-kits.html