SEAL STRUCTURE FOR FUEL PUMP

摘要

Provided is a seal structure for a fuel pump having a double seal construction of a separately provided outer seal and inner seal with which it is possible to improve the ease with which both seals can be assembled and with which it is possible to employ a compact installation area for the double seal. This double seal (71) is provided between a fuel pump insertion hole and a flange (43) of the fuel pump and has an outer seal (72) and a separate inner seal (82). Outer seal inward protrusions (73) which protrude radially inward are provided on the outer seal (72) and inner seal outward protrusions (83) which protrude radially outward are provided on the inner seal (82) and slits (48 49) are provided as positioning parts into which the respective protrusions (73 83) fit. The protrusions (73 83) are arranged alternately in the circumferential direction of the seals (72 82) and are positioned within the same region in the radial direction.