Importance

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Abstract

A jointless braided sealing ring and a method and a special machine for producing it are disclosed. The braided sealing ring adopts a multi-layers braided structure comprising a number of continuously sleeved ring layers arranged from inside to outside. The innermost braided ring layer is the core. The tail end of the first braided ring layer is sleeved on the starting end of the first braided ring layer and serves as the starting end of the second braided ring layer to implement continuous braiding without interruption. N braided ring layers have (N−1) continuous intact braided ring layers. The tail end of the outermost braided ring layer is superposed with the starting end of the innermost braided ring layer. Service life and sealing effect are increased. A perimeter-defining ring in the sealing ring improves dimensions precision of sealing ring, and avoids deforming the sealing ring during braiding and trimming.

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First Claim