https://www.sanpingmachinery.com/products/piston-seal/
China sanping piston seal is used to establish a seal between the piston and the cylinder bore to prevent leakage of hydraulic oil or air.
Elliot Jensen and Elliot Fintry have a lot in common. They share the same name, the same house, the same school, oh and they hate each other but, as they will quickly learn, there is a fine line between love and hate.