FIELD: sealing technology; gate valves and hydraulic cylinders. SUBSTANCE: seal includes housing 1, flange 2 secured in bush 4, rod 3, nonmetallic sliding ring 5, plate spring 6 located in slot of flange 2 and supported by thrust ring 7 engageable with nut 8. Sealing stack located inside cylinder 4 consists of metal rings 12 and 13 with collar 16 between them. On other side of cylinder, second sealing stack is mounted which is similar to first one. EFFECT: enhanced efficiency. 7 dwg
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Authors
Dates
1998-01-27—Published
1995-07-03—Filed