Eleton oil seal structure has three parts: Oil seal body, strengthen the skeleton and from the tight coil springs. Seal is divided into different parts of the body according to the bottom of the waist structural map skeleton oil seal.

Department of edge and sealing lip and so on. Typically, in a free state seal, the inner diameter smaller than the shaft diameter, that have a certain "amount of interference. " Therefore, when the oil seal into the seat and shaft seal, the seal edge from the tight pressure and contractile force of helical spring to some extent on the axis of the radial tightening force, after a period of time running, the pressure decreases rapidly and even disappear, and therefore, can always compensate with the spring force from the tight seal.