| 摘要 |
PROBLEM TO BE SOLVED: To improve squeaking resistance and abrasion resistance of a sealing part by providing a lubricating material holding part to hold a lubricating material on the upstream side in the inserting direction of a shaft of a seal main body on a sealing device to insert the movable shaft in an inner periphery of the ring seal main body and sealing and making contact with an outer peripheral surface of this shaft through the lubricating material. SOLUTION: A sealing device 1 is constituted by furnishing a ring seal main body 3 to seal and to make contact with an outer peripheral surface of a movable shaft 2 through a lubricating material and to seal to prevent intrusion of dust on the atmospheric air side A to the sealing objectfluid side O, and a lubricating material holding part 4 is provided on the upstream side in the inserting direction to the shaft 2 of the seal main body 3. This seal main body 3 has a seal lip 5 to seal and to make contact with the outer peripheral surface of the shaft 2 free to slide, a bumper part 61 to make contact with the outer peripheral surface of the shaft 2 at the time of inclination of the shaft 2, a fitting part 62 to be fit on an inner circunferential surface of an objective material and a bellows part 63 to connect this fitting part 62 and the bumper part 61, and the lubricating material holding part 4 is formed in a sectionally roughly L shaped thin lip shape to bend toward the outer peripheral surface of the shaft 2. |
