Well sWell service packing - or WSPs - act as a seal to prevent the high-pressure slurry in the pump from leaking. The packing OD forms a static seal on the pump fluid end, while the ID acts as a dynamic seal on the pump plungers as they reciprocate back and forth on their respective suction and discharge strokes. Pumping media often includes a mixture of water, chemicals, and sand or ceramic proppant. WSPs provide integrity by forming a dynamic seal that prevents fluids and materials from exiting the fluid end in an uncontrolled manner. High-performance WSPs can go the distance providing a powerful sealing mechanism while protecting the plunger and mating surfaces of the fluid end, protecting the environment from contamination, all while preserving environmental and safety control throughout the frac stages.