These Edwards nXDS dry scroll pump major rebuild bearing replacement service kits Include the front angular contact bearings, shaft end cap, washers, screws, plugs, tip-seals, and O-rings required for a major pump overhaul.These Edwards nXDS dry scroll pump major rebuild bearing replacement service kits Include the front angular contact bearings, shaft end cap, washers, screws, plugs and O-rings required for a major pump overhaul. These nXDS bearing replacement kits do not include the tip seals.