| 摘要 |
PROBLEM TO BE SOLVED: To provide a thrust seal which makes an internal leakage of rotary actuator reduce.SOLUTION: In each leg 9B of both ends of portal type vane seal 9, a circularly annular seal groove 22 is arranged along an inner circumferential arc line m facing an inner surface 11 of sidewall 1B of casing 1, and moreover a wedge member 23 having a circularly annular thrust end surface 30 is mounted within this seal groove 22. |
