service kit: water seals KIT 42310 Water seal kit, Ø40 mm Annovi Reverberi code 42310 In the kit Part numberDescriptionPosition 2820690Ring18 2820680Water seal19 2820670Ring20 2820710Gasket22 2820770Ring23 2820760O-ring24 2820730Gasket26 2820740Spacer27 393000O-ring28 Fits these pumps Annovi Reverberi RTF 2 RTF 135.100 N APRTF 150.100 N AP