In wireline sealing houses, pack-off assemblies utilize stacked rings or cups, creating a multi-element seal that can compensate for cable movement, pressure, and vibration. The modular nature of such assemblies allows tailored performance, adjusting to different wireline diameters and wellhead pressure requirements, thus supporting versatile field deployment.​ https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/