| 摘要 |
A high fracture toughness, wear resistant V-ring seal with superior flexibility, leak tightness and longer operational life comprises an upper V-shaped recess (5), an inner wall (6), an exterior wall (7) and a V-shaped lower surface (9). Said seal is characterized in that an annular groove (8) whose bottom is an open arc is disposed on a bottom of the upper recess (5).
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