Mechanical Seal Rubber dust seal 1. Material: PU, Epdm 2. Color: red, black, green, blue ... seals can include internal (rod seal), external (piston seal), symmetrical or axial seal. With the internal (rod) seal, the seal is fit into a housing ... , DB, TAY, VB, TC Pneumatic Cylinder appropriative seal:PGY, PNY, GLY, PSD, PDU, PPY, PRY Automotive Seal: TC, TC3, TB, HTC, HTC3, HTC5 ...