Adjustment. Abrasive wear appears as progressive material removal from sealing surfaces exposed to hard particles such as proppant sand, cement, silica flour, or formation solids in produced fluids, with wear rates dependent on particle hardness, size, shape, concentration, and relative velocity between particles and packing surfaces. https://globalsealstech.com/product-category/oil-gas-seals/high-pressure-water-pump-seals/