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O型圈

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型圈

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O型圈的介紹及用途

　　O型密封圈是指截面為"O"形的橡膠圈。是液壓與氣壓傳動(dòng)系統中使用最廣泛的一種。主要用于機械部件在靜態(tài)條件下防止液體和氣體介質(zhì)的泄露。在某些情況下，O型密封圈還能用做軸向往復運動(dòng)和低速旋轉運動(dòng)的動(dòng)態(tài)密封元件。其結構簡(jiǎn)單、安裝方便、成本低、易維修、材質(zhì)多樣?？勺鳛橛?、水、氣體等各種各樣流體的密封使用。根據不同的條件,可分別選擇不同的材料與之相適應。

　　從密封原理來(lái)看，O型密封圈是一種擠壓型密封，擠壓型密封的基本工作原理是依靠密封件發(fā)生彈性變形，在密封接觸面上造成接觸壓力，接觸壓力大于被密封介質(zhì)的內壓，則不發(fā)生泄漏，反之則發(fā)生泄漏。

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