working pressure,100MPa ,working medium: hydraulic oil,water and vapor. Hardness,HS95+5A.the quality is very steady.some products exported to many countries,some used in military machinery.
Guide ring
This products is made of wear-resistant PTFE,Widely used for piston and piston rod in reciprocating hydraulic oil cylinder. Avoid any colliding with cylinder wall,have supporting and guiding function,working temperature -180~+250 °C ,