Adhesive wear or galling occurs when boundary lubrication films fail and direct metal-to-packing contact with molecular adhesion creates material transfer, surface roughening, and accelerated degradation, typically resulting from inadequate lubrication, excessive sealing force, thermal conditions degrading lubricant films, or contamination displacing lubricants from critical surface r... https://globalsealstech.com/product-category/oil-gas-seals/high-pressure-water-pump-seals/