反壓狀態是不良的工作狀態，介質中的顆粒、雜質很容易進入密封面，使密封失效。磨軸的主要件為橡膠波紋管，且由于上端密封面處于不良潤滑狀態，動靜環之間的摩擦力矩大于橡膠波紋管與軸之間的傳遞轉矩，從而發生相對轉動。動、靜環輔助密封由于受到污水中的弱酸、弱堿的腐蝕，橡膠件已無彈性。渣漿岢嵐泵用岢嵐機械密封的工作原理要求岢嵐機械密封內部無任何雜質，在組裝岢嵐機械密封前要徹底清掃動環、靜環、軸套等部件，檢查動靜環表面是否存在劃痕、裂紋等缺陷，這些缺陷存在會造成岢嵐機械密封嚴重(zhong)漏(lou)泄(xie)。必要時(shi)可以制作工(gong)裝(zhuang)在組(zu)裝(zhuang)前(qian)水壓試驗，檢查動靜環座是否存在影(ying)響密封(feng)的(de)缺陷(xian)。

　　渣漿岢嵐泵用岢嵐機械密封由于密封面變形所引起的，而且岢嵐機械密封面泄漏的概率是很高的。如果泵在啟動時就發生岢嵐泵用岢嵐機械密封泄漏，而拆查密封面時看不見有損壞的地方，這時就應該用平晶檢查岢嵐機械密封的變(bian)形情況(kuang)。如果發生變(bian)形，用平晶(jing)檢查密(mi)封面的干涉帶的變(bian)化(hua)情況(kuang)，密(mi)封面變(bian)形存在于(yu)動(dong)環和靜環之間。

　　壓缸體動(dong)(dong)(dong)(dong)(dong)(dong)態密封(feng)(feng)(feng)(feng)系統(tong)采用(yong)(yong)(yong)(yong)的(de)是主密封(feng)(feng)(feng)(feng)設(she)計(ji)，一般都用(yong)(yong)(yong)(yong)U型密封(feng)(feng)(feng)(feng)圈。液壓缸體的(de)往復式動(dong)(dong)(dong)(dong)(dong)(dong)態密封(feng)(feng)(feng)(feng)系統(tong)的(de)設(she)計(ji)，開始使(shi)(shi)用(yong)(yong)(yong)(yong)了(le)更加(jia)復雜的(de)U型圈和(he)同軸密封(feng)(feng)(feng)(feng)組件的(de)復合(he)式設(she)計(ji)。密封(feng)(feng)(feng)(feng)的(de)靜環(huan)(huan)(huan)通常(chang)固(gu)定在殼體上，動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)通過彈(dan)簧、彈(dan)簧座與軸一同旋轉。靜環(huan)(huan)(huan)與殼體、動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與軸形成(cheng)(cheng)的(de)間隙用(yong)(yong)(yong)(yong)成(cheng)(cheng)型填料密封(feng)(feng)(feng)(feng)。在動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和(he)靜環(huan)(huan)(huan)接(jie)觸的(de)端面形成(cheng)(cheng)相(xiang)對滑動(dong)(dong)(dong)(dong)(dong)(dong)面，即動(dong)(dong)(dong)(dong)(dong)(dong)密封(feng)(feng)(feng)(feng)面。為保證密封(feng)(feng)(feng)(feng)良好，動(dong)(dong)(dong)(dong)(dong)(dong)密封(feng)(feng)(feng)(feng)面應十分平直和(he)光潔(jie)。彈(dan)簧力和(he)被密封(feng)(feng)(feng)(feng)的(de)流(liu)體壓力使(shi)(shi)動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)貼緊(jin)靜環(huan)(huan)(huan)。因動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)與軸通過彈(dan)簧連(lian)接(jie)，動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)和(he)靜環(huan)(huan)(huan)間貼合(he)性受軸的(de)振動(dong)(dong)(dong)(dong)(dong)(dong)和(he)擺動(dong)(dong)(dong)(dong)(dong)(dong)影響較小(xiao)。靜環(huan)(huan)(huan)一般常(chang)用(yong)(yong)(yong)(yong)潤(run)滑性好的(de)軟(ruan)質材料如石墨(mo)、填充聚四氟乙(yi)烯等，動(dong)(dong)(dong)(dong)(dong)(dong)環(huan)(huan)(huan)多用(yong)(yong)(yong)(yong)硬質合(he)金、陶(tao)瓷等材料制造。