API 6D ball valve seals must accommodate pressure cycling caused by changes in flow and operating conditions. Repeated pressure fluctuations can lead to fatigue and loss of sealing force. High-resilience materials and optimized designs help maintain performance. Effective pressure cycling capability ensures stable sealing and reduces the risk of leakage over extended service life. https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/