... guide, foot valve, piston 3. Steam treatment Product NameSinter Parts for Shock Absorber - Rod guide, Foot valve, Piston Raw MaterialsMPIF ... time, Thickness of Fe3O4: 0.004-0.005mm4. Full line products for shock absorber, including powder metallurgy piston, rod guide, foot ... valve, PTFE band for piston, Du bearing for rod guide. 5. PPAP III is submitted accordingly. ...