... and trading company of USH piston rod seal, piston rod u cup seal,hydraulic piston rod seal,UPI seal,ect Hydraulic Seals - Introduction 1 ... towards optimizing working procedures. Application of Seal in Various Industries General mechanical cylinder appropriative seal:USH, UPH, USI, UPI, ODI ... , BRT, RYT, DB, TAY, VB, TC Pneumatic Cylinder appropriative seal:PGY, PNY, GLY, PSD, PDU, PPY, PRY Automotive ...