Heat generation from friction between reciprocating plungers and packing rings can elevate stuffing box temperatures above 200°F during operation. Excessive heat accelerates packing degradation, causes lubricant breakdown, and may lead to thermal failure, requiring proper gland adjustment, adequate lubrication, and cooling provisions in severe applications. https://globalsealstech.com/product-category/oil-gas-seals/high-pressure-water-pump-seals/