Metal stem seals designed by Kvenna AS for subsea application fully qualified according to API 6A (ISO 10423) PR2 and class 2 sandy service. Metal seals were introduced early to improve reliablility of subsea valves and connections. Increase in pressure and temperature ratings have further enhanced the need for metallic sealing solutions. Kvenna has proven designs for multiple sealing needs, including stem seals and radial body/bonnet seals for low pre-tension solution.