1.compressor part/air compressor part 2. Made by Continuous Cast Iron Tube 3.High Density,Zero Defects,Superb Wear Resist I.Intro:Based ... ,sealing ring, sliding sleeve Industrial machineries axis sleeve, gear, kawa, wear-resistant sleeve, grinding sleeve Oil drillingdrillable packers/drillable bridge plug, suction ... pump stator, gear Mine mechinanismwear resist sleeve, engine cylinder compressor part