Downhole safety valves face repeated RGD cycles over 20-year service life. Permanent packers and expandable liners also require extreme resistance. FFKM-based RGD seals have demonstrated survival after 100+ simulated decompression events at 15,000 psi and 177°C, far exceeding traditional elastomer lifetimes in identical conditions. https://globalsealstech.com/product/rgd-rapid-gas-decompression-o-rings/