Temperature ratings for API 6A gate valve seals are designated by specific classes within the specification. Standard temperature classes include K (-75°F to 180°F), L (-75°F to 180°F), P (0°F to 250°F), R (0°F to 250°F), S (-75°F to 250°F), T (-75°F to 250°F), and U (0°F to 350°F). High-temperature applications may require specialized sealing solutions rated beyond these standard ran... https://globalsealstech.com/