| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sealing system capable of preventing intrusion of dust to sealing fluid while preventing impairing of sealing performance by sliding abrasion. <P>SOLUTION: This sealing system for sealing a circular clearance between a rod 50 and a cylinder 60 relatively reciprocated, comprises a rod seal 10 mounted mainly to prevent leakage of the sealing fluid, a buffer ring 20 mounted at a sealing fluid (O) side with respect to the rod seal 10 to mainly buffer fluid pressure, and a dust seal 30 mounted at an atmospheric air (A) side with respect to the rod seal 10 to mainly prevent intrusion of dust from the external to the sealing fluid (O) side. This sealing system further comprises a forth seal 40 mounted between the rod seal 10 and the dust seal 30, and oil or grease enclosed between the dust seal 30 and the forth seal 40. <P>COPYRIGHT: (C)2007,JPO&INPIT |
