Hybrid packer systems combine different element materials in stacked configurations, optimizing performance across varying conditions within a single well. A soft nitrile element might seal against casing irregularities while a hard fluoroelastomer element resists chemical attack from stimulation fluids. Temperature-graded elements use heat-resistant compounds where geothermal gradien... https://globalsealstech.com/product-category/oil-gas-seals/api-6a-wellhead-equipment-seals/