Durlon 9465 is a filled PTFE gasket with enhanced compressibility and controlled permeability, specifically formulated for sealing uneven flange surfaces, such as glass-lined equipment, plastic piping, or aged steel flanges. It is widely used in pharmaceutical, food, chemical, and specialty equipment where low torque sealing, chemical resistance, and surface adaptability are critical. The material resists cold flow and maintains a tight seal even under thermal cycling.