... AISI316 8.Retainer: PTFE, nylon, PEEK or (stainless)steelfeature:1.it included seat ring,bearing gaskers,steel ball and retainer.2 ... .high rigidity,resistant to impact3.low revolutions4.it can just be subjected by axial load 5.the bearing ... gaskers and seat ring can't slopeApplications:Equipment,onshore and offshore crans,excavator,concrete machine,paper machine,plastic and rubber machine ...