part 90357800 O-ring 7,66 x 1,78 (2031) Interpump code 90357800 Details Interpump number90357800 DescriptionO-ring 7,66 x 1,78 (2031) ItalianOR D. 7.66x1.78 NBR 70SH 2031Qty per pump1 Fits these pumps Interpump 53 E1 series 3 E1D1835E1E1811E1E2111 Interpump 53 ET1 brass series 2 ET1D1835ET1E1811