Gaskets are the static sealing components on the wet side of an AODD pump. They sit at every joint where two pump body sections meet — between the manifolds and the fluid chambers, between the fluid chambers and the centre block, and between the centre block and any covers or end plates. Their function is to prevent process fluid from leaking externally at these joints under the pressure and cyclic forces generated by the pump's operation.
Although gaskets are not moving parts, they are still consumable components that require replacement during every scheduled strip-down or service. Each time a pump is opened, gaskets are compressed and deformed. Over multiple service cycles, they take a permanent set, lose their compressibility, and can no longer create a reliable seal when the pump is reassembled. Chemical attack, elevated temperatures, and prolonged exposure to aggressive fluids also degrade gasket material, accelerating the need for replacement.
Fitting a new gasket set at every pump overhaul is a low-cost step that prevents external leaks, maintains suction performance, and avoids costly unplanned shutdowns — particularly important in chemical, pharmaceutical, and paint manufacturing environments where any process fluid leak is a safety, quality, or compliance concern.
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