Seal materials degrade during storage through oxidation, moisture absorption, and other time-dependent mechanisms, necessitating proper storage conditions including protection from sunlight, ozone, elevated temperatures, and humidity, along with first-in-first-out inventory rotation and defined shelf life limits beyond which seals should not be used regardless of apparent condition. https://globalsealstech.com/product-category/oil-gas-seals/downhole-completion-tools-seals/