part 3720560 O-ring Ø 4,5x1,5 Annovi Reverberi code 3720560 Details Annovi Reverberi number3720560 DescriptionO-ring Ø 4,5x1,5 ItalianGuarnizione OR Ø 4,5x1,5Qty per pump1 Fits these pumps Annovi Reverberi RQV 1 RQV 2.5 G30 D Annovi Reverberi RQW 1 RQW 2.5 G28 D