You can never put a date on how long a gasket will last because it’s entirely based on usage and quality of materials. The SEALS only uses the highest quality gaskets made from a domestic manufacturer, and all gaskets come with an industry-leading 120-day warranty. Gasket life cycles are based on wear and tear, how often you clean, and what you clean it with (cleaning agents can harden it and cause the rubber to accelerate in decomposition).