EPM Can manufacture Cast Iron Piston Rings fast PERMASEAL TWIN SEAL Developed specifically to provide the lowest possible leakage of any metallic piston ring seal. The basic design consists of two Butt Cut outer rings, a spring steel anti-extrusion ring, and an elastomeric inner seal. When Twin-Seal is used to pass ports, each outer ring must be wider than the diameter of the port. HOOK TYPE Used in automatic transmissions and wherever blind assembly requires passing counter-bores and oil passage slots. STEP CUT A standard piston ring design with proven reliability for noncritical sealing applications. BUTT CUT Most often used…