part 2281620 Gasket Annovi Reverberi code 2281620 Details Annovi Reverberi number2281620 DescriptionGasket ItalianGuarnizioneQty per pump3 Also comes in KIT 42329 Water seal kit, Ø18 mm Fits these pumps Annovi Reverberi RHW 4 RHW 10.15 NRHW 13.12 NRHW 13.17 NRHW 15.15 N