Parameter analysis of the radial lip seal by orthogonal array method

This study investigates the effects of structure, material parameters and assembly conditions on the reverse pumping rate and friction torque of the radial lip seal by using a mixed elastohydrodynamic lubrication model. The orthogonal array method is used to make a numerical experiment plan for eight parameters, which are identified as eight control factors. Each factor has five levels. The significance of each parameter on the reverse pumping rate and friction torque of the radial lip seal is evaluated by range analysis and F-test. As a result, optimal values of eight parameters are suggested. The seal with this set of optimal values has a higher reverse pumping rate and lower friction torque than those of a previously-designed seal.