FIELD: machine building.
SUBSTANCE: invention relates to seals. The proposed lubricant-free stem sealing system comprises, at least, one O-ring with sealing surface, actuator element, pickup and ring with chamber that houses O-ring. The actuator element features such an active joint, relative to the O-ring, that the sealing surface can radially shift with respect to the stem. The actuator element can be adjusted depending upon parametre recorded by the pickup in measurement.
EFFECT: higher reliability of seal.
17 cl, 18 dwg
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|---|---|---|---|
| STEM SEALING | 0 |
|
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