part 90384500 O-ring 18,72 x 2,6 (3075) Interpump code 90384500 Details Interpump number90384500 DescriptionO-ring 18,72 x 2,6 (3075) ItalianOR D. 18.72x2.62 NBR 70SH 3075Qty per pump1 Fits these pumps Interpump 53 E1 series 3 E1D1835E1E1811E1E2111 Interpump 53 ET1 brass series 2 ET1D1835ET1E1811