Downhole tool seals are required to withstand repeated cycles of pressure changes and temperature shocks. Advanced compounds, such as hydrogenated nitrile butadiene rubber (HNBR), are preferred for their resilience. These materials ensure reliable performance during tasks like stimulation, fracturing, or enhanced oil recovery processes. https://globalsealstech.com/product-category/oil-gas-seals/downhole-completion-tools-seals/