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 ... , SCY, SCJY, VSB, SB2, HTBW, HSC Hydraulic pump high pressure appropriative seal:TCN,TCV Metallurgy appropriative seal: SB, MOY, MG, MG7, TC, TB ...