| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing device having good reliability capable of keeping pump quantity due to the guide blade pump action of a guide blade part even if the sliding surface of a seal lip wears away. SOLUTION: The atmospheric side inclined surface of the seal lip is provided with a plurality of guide blade projections inclined to the tip edge of the seal lip from a position at a fixed distance without contacting the tip edge of the seal lip not to cause a turn-up phenomenon at the tip edge of the seal lip to be higher than before to increase the pump quantity. |
