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A siphon gasket provides a tight seal between the siphon and the boiler body, preventing condensate leaks. This rubber or fiber ring is a common replacement part during boiler maintenance and repair. When selecting burner spare parts or boiler components, a quality gasket ensures the siphon functions correctly, avoiding moisture issues that can affect other parts. This gasket is designed to withstand the chemical properties of condensate and maintain a durable seal over time.