In the sealing device, damage to the seal lips during installation of the device can be prevented, and the device exhibits excellent muddy water sealing performance.

本发明的万向节用密封装置能够防止安装过程中密封唇的损坏等，并且泥水密封性较好。

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Also, new players often have trouble sealing their lips around the harmonica, so that air leaks.

另外，口琴新手往往很难把握在嘴唇和口琴之间密封度，密封不佳就会导致气流外漏；

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