熱水泵集式密封的(de)(de)大(da)多數(shu)主要(yao)特性是其控(kong)制(zhi)密封功(gong)能(neng)、摩擦(ca)力(li)(li)、磨損和壽(shou)命的(de)(de)自動界面潤滑機理。一切取(qu)決于(yu)穿(chuan)過(guo)界面并建立潤滑膜的(de)(de)液體(ti)以便(bian)密封在實際無接(jie)觸，通常是混合磨擦(ca)，介于(yu)干摩擦(ca)和完整液膜之間的(de)(de)潤滑摩擦(ca)狀態下運(yun)行。在腔體(ti)壓(ya)力(li)(li)作用(yong)下介質(zhi)穿(chuan)過(guo)密封摩擦(ca)副端面，表面張力(li)(li)和離心力(li)(li)在此時影(ying)響不大(da)，流(liu)體(ti)壓(ya)力(li)(li)持續下降直到它達到外部(bu)背壓(ya)，此壓(ya)力(li)(li)作用(yong)類似于(yu)流(liu)體(ti)靜壓(ya)時軸承(cheng)的(de)(de)承(cheng)載功(gong)能(neng)。這取(qu)決于(yu)介質(zhi)粘度、轉速和端面間隙變(bian)化。

　　熱水泵集式密(mi)(mi)封(feng)要(yao)(yao)起到(dao)靜(jing)環(huan)(huan)和動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)的(de)密(mi)(mi)封(feng)作(zuo)用，同(tong)時也起到(dao)浮動(dong)(dong)(dong)(dong)(dong)緩沖作(zuo)用，要(yao)(yao)求靜(jing)環(huan)(huan)的(de)輔助密(mi)(mi)封(feng)元件能保證(zheng)(zheng)靜(jing)環(huan)(huan)與(yu)(yu)壓(ya)蓋之間(jian)(jian)的(de)密(mi)(mi)封(feng)性和靜(jing)環(huan)(huan)有一定的(de)浮動(dong)(dong)(dong)(dong)(dong)性，動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)的(de)輔助密(mi)(mi)封(feng)元件能保證(zheng)(zheng)動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)與(yu)(yu)軸(zhou)(zhou)與(yu)(yu)軸(zhou)(zhou)套之間(jian)(jian)的(de)密(mi)(mi)封(feng)性和動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)的(de)浮動(dong)(dong)(dong)(dong)(dong)性，材料要(yao)(yao)求耐熱或耐寒并能與(yu)(yu)介(jie)質相容。起到(dao)將軸(zhou)(zhou)的(de)轉矩傳(chuan)(chuan)(chuan)給動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)的(de)作(zuo)用，中間(jian)(jian)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)的(de)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)銷(xiao)、壓(ya)環(huan)(huan)—傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)環(huan)(huan)、傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)銷(xiao)—彈簧座(zuo)均起傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)(dong)作(zuo)用，材料要(yao)(yao)求耐磨和耐腐蝕。

　　緊(jin)固(gu)(gu)件(jian)要(yao)起(qi)到靜、動(dong)環的定位(wei)、緊(jin)固(gu)(gu)和盛裝(zhuang)(zhuang)的作用，要(yao)求(qiu)定位(wei)正確(que)(que)，保(bao)證摩擦副密封(feng)面處(chu)于正確(que)(que)的位(wei)置(zhi)并保(bao)持(chi)良好(hao)貼(tie)合(he)的彈(dan)簧比(bi)壓。同時要(yao)求(qiu)拆裝(zhuang)(zhuang)方便、容易(yi)就(jiu)位(wei)、能重(zhong)復利(li)用。與(yu)輔助密封(feng)配合(he)處(chu)，注(zhu)(zhu)意安裝(zhuang)(zhuang)密封(feng)環的導向側(ce)角和壓彈(dan)量。特別應注(zhu)(zhu)意動(dong)環輔助密封(feng)件(jian)與(yu)軸套配合(he)處(chu)要(yao)求(qiu)耐腐(fu)蝕和耐磨損，必要(yao)時采用硬面復層(ceng)。

　　熱(re)水(shui)泵集式(shi)密(mi)(mi)封一般配上(shang)平(ping)衡(heng)(heng)循環(huan)系統(tong)，可使(shi)用(yong)在易(yi)燃、易(yi)爆(bao)、有(you)毒及(ji)腐蝕、高真(zhen)空等對(dui)密(mi)(mi)封要求(qiu)更為(wei)嚴格(ge)的(de)(de)場合。密(mi)(mi)封結構(gou)為(wei)外沖洗結構(gou)，沖洗液(ye)可以為(wei)清潔的(de)(de)水(shui)也可為(wei)工(gong)業回(hui)用(yong)水(shui)，密(mi)(mi)封腔壓(ya)力高于沖洗液(ye)的(de)(de)壓(ya)力，沖洗液(ye)在輔助套的(de)(de)上(shang)端輸(shu)(shu)入，在輔助套的(de)(de)下端輸(shu)(shu)出,循環(huan)使(shi)用(yong),密(mi)(mi)封起到冷卻沖洗的(de)(de)作用(yong)，其輔助裝置有(you)調溫器、平(ping)衡(heng)(heng)罐、強制循環(huan)平(ping)衡(heng)(heng)系統(tong)等。