Belleflex ® engineers provide assistance in determining fatigue life for your specific application. Disc springs are commonly found in a variety of applications including pressure controls and Webthe goal of determining the fatigue life is to ensure that your belleville washer or disc spring solution will be able to withstand the stress to which it will be exposed. Webwhether the belleville washer needs to fit tightly under the head of the bolt or provide a wide bearing surface across the mating flange, our products offer long fatigue life, predictable and consistent performance, and the reliability that may be missing in your current solution.