service kit: water seals KIT 43519 Water seal kit, Ø36 mm Annovi Reverberi code 43519 In the kit Part numberDescriptionPosition 3660510Ring13 4040130Gasket14 3660520Ring15 3660730Gasket16 1320361O-ring22 Fits these pumps Annovi Reverberi RTX-SS 1 RTX-SS 100.100 N