| 摘要 |
FIELD: sealing engineering. ^ SUBSTANCE: sealing unit comprises housing, bushing mounted on the shaft of the pump, bearing and pressing members mounted in the bore provided in the housing, and seal that embraces the bushing. The seal has rings made of braid material made of graphite fluoroplastic threads, cooling rings made of alternative graphite layers and metallic foil arranged perpendicular to the axis of the ring, and sealing rings made of graphite layers arranged parallel to the axis of the ring. ^ EFFECT: improved pressure tightness. ^ 6 cl, 4 dwg |
