Chemical compatibility requirements address exposure to completion brines, hydraulic fracturing fluids, acids, diesel, and various well treatment chemicals. Packings must resist swelling, degradation, or dissolution when contacting these fluids. Acid service demands chemically inert materials like PTFE or graphite. Hydrocarbon service suits aramid or rubber packings. Compatibility tes... https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/