Supporting piston ring for magnetic drive pump shaft sleeve

The utility model provides a supporting piston ring for a magnetic drive pump shaft sleeve. The supporting piston ring for the magnetic drive pump shaft sleeve comprises a piston ring body. The piston ring body is a rubber piston ring. Bearing stability and abrasion-resistant capacity of the rubber piston ring is good, the rubber piston ring has the low-fraction feature, and forming machining of the rubber piston ring is easy. During actual installation, a press machine and the like are not needed to assist the work, a single person can complete the work independently, installation is convenient, and operation is simple. Due to the fact that the rubber piston ring is good in attachment performance and elasticity, the supporting piston ring is good in sealing effect, slow in abrasion, and good in self-lubricating performance.