Material selection for API 6A gate valve seals depends critically on service conditions including temperature, pressure, and fluid compatibility. Elastomeric compounds like nitrile, Viton, and HNBR offer excellent sealing at moderate temperatures. Polytetrafluoroethylene (PTFE) based seals handle corrosive fluids and wider temperature ranges. Metal-to-metal seals using materials like ... https://globalsealstech.com/