DIN 7603 is the standard of ring seal and gasket for banjo fittings. it is a sealing ring, specifies dimensions, materials for ring seals or filled gasket for use with compression couplings (eg. specified as DIN 3850 and DIN 7601), or pipe plugs(DIN 908)
DIN 7603 dimensions ring seal and gasket of type A, type B, type D as follows
DIN_7603_dimensions_designation_Type_A_C_D
