| 摘要 |
A seal for a gas isolator which comprises a cantilever leaf spring to be attached to a fixed frame or a movable member of the isolator and a bias spring acting on the leaf spring, wherein the leaf spring is bent or curved when unstressed whereby in the sealing position of the seal the stress induced in the bias spring will be the same as that induced in the leaf spring where the bias spring and the leaf spring seal have the same section modulus per unit length of seal.
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