DHS系列防尘密封件名称代号外径D内径d厚HDHS11.219.211.26DHS1422146DHS1826186DHS2028206DHS22.430.422.46DHS23.531.523.56DHS2533256DHS2836286DHS3038306.5DHS31.539.531.56.5DHS3543356.5DHS35.543.535.56.5DHS4048406.5DHS4553456.5DHS5058506.5DHS5361536.5DHS5563556.5DHS5664566.5DHS6068606.5DHS6371636.5DHS6573656.5DHS6775676.5DHS7080708DHS7181718DHS7585758DHS8090808DHS86