Double-material rotary oil seal

The utility model discloses a double-material rotating oil seal which comprises a supporting piece, an auxiliary ring fixedly installed on the inner side of the supporting piece, a metal framework fixedly installed in the auxiliary ring, an installation ring fixedly installed on the inner side of the supporting piece, a fixing ring fixedly installed on the inner side of the installation ring, and a dustproof oil seal lip ring fixedly installed on the inner side of the fixing ring. And a movable ring is fixedly mounted on the inner side of the fixed ring. Through the oil seal lip ring A, the sealing rubber and the sealing outer ring, external sundries can be prevented from intruding into a machine body, the tightening spring drives the oil seal lip ring A to be tightened to be tightly attached to the outer side of the rotating shaft, the sealing performance of the device is improved, the external sundries intrude into the machine body, lubricating oil leaks to the outside from a lip opening, and the service li