part 2021580 O-ring Ø 13,23x1,78 Annovi Reverberi code 2021580 Details Annovi Reverberi number2021580 DescriptionO-ring Ø 13,23x1,78 ItalianGuarnizione OR Ø 13,23x1,78Qty per pump3 Fits these pumps Annovi Reverberi RTF 2 RTF 135.100 N APRTF 150.100 N AP