套(tao)管(guan)伸(shen)縮(suo)節由能夠作軸向(xiang)相對運(yun)(yun)動(dong)(dong)的(de)(de)內外(wai)套(tao)管(guan)組成。內外(wai)套(tao)管(guan)之間采用(yong)(yong)填料函密(mi)封。使用(yong)(yong)時保持(chi)兩端(duan)管(guan)子在(zai)一條軸線上移動(dong)(dong)。產品主要有(you)套(tao)筒(芯管(guan)),外(wai)殼(ke),密(mi)封材料等組成.用(yong)(yong)于(yu)補償管(guan)道的(de)(de)軸向(xiang)伸(shen)縮(suo)及任意角度的(de)(de)軸向(xiang)轉動(dong)(dong).具有(you)體積小補償量大的(de)(de)特點適用(yong)(yong)于(yu)熱(re)水(shui)、蒸(zheng)氣、油脂類介質,通過滑動(dong)(dong)套(tao)筒對外(wai)套(tao)筒的(de)(de)滑移運(yun)(yun)動(dong)(dong),達到(dao)熱(re)膨脹(zhang)的(de)(de)補償。