... cross section.Hydraulic Seals – Type Piston SealsRod SealsBoth Piston & Rod SealsDust SealsBuffer RingWear RingDust Seals Hydraulic Seals – Material Hydraulic Seals - ... procedures. Application of Seal in Various Industries General mechanical cylinder appropriative seal:USH, UPH, USI, UPI, ODI, ... WR, BRT, RYT, DB, TAY, VB, TC Pneumatic Cylinder appropriative seal:PGY, PNY, GLY, PSD, PDU, PPY, PRY ...