Only compounds passing 100% NORSOK M-710 qualification earn approval status. Testing includes 10–20 weeks accelerated aging in 2–30% H₂S + CO₂ + brine at maximum rated temperature, followed by mechanical property retention within ±25% and zero cracking, making them mandatory for Equinor, Aker BP, and TotalEnergies projects https://globalsealstech.com/medical/