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High pressure seals are typically used to restrict fluids at pressures above 5,000 psi. At these pressures, standard energized polyurethane lip seals and U-cup seals work without special provisions. Above them, a special seal of some kind is required.To be effective, seals must perform three basic f…

Centrifugal pumps in chemical plants and refineries rely on mechanical seals to prevent fluid leakage. Every seal connection is a potential leak point and leaks can lead to unorganized emissions, asset damage, unplanned downtime, environmental issues, and safety risks. Therefore, attention must be p…

Despite their low cost, seals are often one of the most important components of a product. Seals must be carefully designed and manufactured to ensure superior product performance. This section reviews the issues that need to be considered when making sealing decisions.All sealing applications fall…