... can include internal (rod seal), external (piston seal), symmetrical or axial seal. With the internal (rod) seal, the seal is fit into a ... of our role to be productive, cost-effective and quality oriented for our clients. 2) We will continuously practice ... SCJY, VSB, SB2, HTBW, HSC Hydraulic pump high pressure appropriative seal:TCN,TCV Metallurgy appropriative seal: SB, MOY, MG, MG7, TC, TB, ...