Products Search by Part Number Products>Vacuum Products>Vacuum Filters>ZF>ZFB/ZFC, Replacement Filter Element ZFB/ZFC, Replacement Filter Element Replacement filter element w/ O-ring for Series ZFB, ZFC air suction filters. Sold in quantities of 10 pieces. Replacement filter element w/ O-ring Sold in Qty 10 pieces. Configuration Options Select Product Options Select values from the drop down lists or make appropriate selections to configure the part number. Model -- Pick an Option -- 34S (ZFB100, ZFB101) 35S (ZFB200, ZFB201) 36S (ZFB300, ZFB301) 39S (ZFB401) 68S (ZFC05) 62S (ZFC10) 63S (ZFC20) Options in: Gray are not compatible with other selected option value. Red conflict with another selected option value. Amber are not recommended.