part 3660520 Ring Ø 36 Annovi Reverberi code 3660520 Details Annovi Reverberi number3660520 DescriptionRing Ø 36 ItalianAnello antiestr. Ø 36Qty per pump3 Also comes in KIT 42844 Water seal kit, Ø36 mmKIT 43519 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