FIELD: sealing technology; stuffing box seals for rods and spindles of shut-off fittings of hot and cold water pipe lines. SUBSTANCE: chamber of seal is filled with paper pulp including anti- friction components which embraces movable member to be sealed. When water penetrates into chamber of seal, paper pulp gets swollen increasing in volume and restoring tightness of movable member. EFFECT: enhanced reliability of sealing. 2 cl, 1 dwg
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0 |
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Authors
Dates
2000-09-10—Published
1997-03-17—Filed