1. Property and usage
　　Guide sleeve A is the guide sleeve for piston rod, has the bearing and guiding functions to piston rod.
2. Material
　　Nylon PA, polyoxymethylene POM and poly(tetrafluoroethylene) PTEE.
3. Operating condition
　　Operating temperature: -55～225℃(Above 120℃, adopt PTFE.);
　　Working medium: Hydraulic oil, emulsion and water;