Bushing na-ezo aka na mgbaaka aka na-eji dị ka akpịrị na mpụga akụkụ. Bush na-arụ ọrụ nwere ike igwu ọtụtụ ọrụ, n'ozuzu, ọ bụ ụdị akụrụngwa na-echebe akụrụngwa ahụ. Bushing nwere ike ibelata ngwa eji akụ, mkpọtụ na mkpọtụ, ọ nwere mmetụta nke igbochi corrosion yana ikwado mmezi akụrụngwa.