NORSOK M-710 remains the gold standard for RGD qualification. The test subjects seals to 100% CO2 at 150 bar and 100°C, followed by decompression at 15 bar/minute for 10 cycles. Passing grades show no cracks longer than 0.5 mm and less than 25% volume swell. FFKM compounds routinely achieve zero internal cracking under these conditions. https://globalsealstech.com/product/rgd-rapid-gas-decompression-o-rings/