HNBR seals bridge mid-tier downhole tools, hydrogenated for 150°C and H2S resistance per NACE MR0175. In frac plugs, HNBR V-stacks hold 12,000 PSI across 20 stages. Zinc oxide fillers boost anti-extrusion. RGD-resistant per NORSOK M-710. In Permian shale, they cut leaks by 90%. Challenges: cost 2x NBR, but ROI from fewer trips. CDI’s HNBR seals pass 1,500 PSI decompression. Ideal for ... https://globalsealstech.com/product-category/oil-gas-seals/downhole-completion-tools-seals/