套(tao)筒(tong)式(shi)(shi)補償(chang)器的(de)(de)內套(tao)筒(tong)與管道(dao)連接,采用(yong)高(gao)性(xing)能(neng)自壓式(shi)(shi)動(dong)密(mi)封的(de)(de)原理與結構(gou),它(ta)可(ke)以隨著管道(dao)的(de)(de)伸縮在外(wai)殼內進行自由滑動(dong),能(neng)適(shi)應任何管道(dao)的(de)(de)密(mi)封要求.外(wai)殼與內套(tao)筒(tong)之(zhi)間(jian)采用(yong)新型合成材料密(mi)封,能(neng)耐高(gao)溫,防腐蝕抗老化,適(shi)用(yong)溫度-40至(zhi)150,特殊(shu)情況下可(ke)達350.既能(neng)保證軸向滑動(dong),又能(neng)保證管內介質不(bu)泄漏。