When adjustment no longer adequately controls leakage or acceptable temperature levels cannot be maintained without excessive tightening, complete packing replacement becomes necessary, with used packing removed and examined to identify predominant wear patterns, failure mechanisms, and potential operational issues such as abrasive contamination, chemical attack, or thermal damage tha... https://globalsealstech.com/product-category/oil-gas-seals/high-pressure-water-pump-seals/