service kit: water seals KIT 43617 Water seal kit Annovi Reverberi code 43617 In the kit Part numberDescriptionPosition 4180360Ring15 4180350Gasket16 4180370Ring17 4180470Gasket19 1344070O-ring21 Fits these pumps Annovi Reverberi RTD 1 RTD 200.100 Annovi Reverberi RTD-L 1 RTD-L 160.100