part 3660550 Ring Annovi Reverberi code 3660550 Details Annovi Reverberi number3660550 DescriptionRing ItalianAnello antiestrusioneQty per pump3 Also comes in KIT 42843 Water seal kit, Ø30 mmKIT 42844 Water seal kit, Ø36 mm Fits these pumps Annovi Reverberi RTX 1 RTX 100.120 N Annovi Reverberi RTX-SS 1 RTX-SS 100.100 N