机床旋转轴的密封,广泛采用使用可靠、重量轻、尺寸小、结构简单的皮碗密封装置(密封碗)。最近几年,国外厂商在密封技术领域中进行了深入的研究,制造出旋转轴皮碗密封装置的新结构,并取得了专利权。由聚四氟乙烯制造的皮碗密封装置用于密封介质的压力小于500MPa、温度从超低温到+315℃范围内的旋转轴(轴径从2.5～1600mm),密封装置具有C型横截面的皮碗,它 Sealing machine shaft rotation, the widespread use of reliable, light weight, small size, simple structure of the cup seal (sealed bowl). In recent years, foreign manufacturers in the field of sealing technology carried out in-depth study to create a rotating shaft bowl sealing device of the new structure, and obtained the patent. Cup seals made of Teflon are used to seal media with a pressure of less than 500 MPa, temperatures ranging from cryogenic temperatures up to + 315 ° C (shaft diameters from 2.5 to 1600 mm), seals with C-shaped cross-section skin Bowl, it