塑料(liao)法(fa)(fa)蘭根(gen)，用(yong)于塑料(liao)管道或復合管道等的連(lian)(lian)(lian)接(jie)，有(you)連(lian)(lian)(lian)接(jie)圍邊和連(lian)(lian)(lian)接(jie)結(jie)合面(mian)，連(lian)(lian)(lian)接(jie)圍邊上(shang)沒有(you)連(lian)(lian)(lian)接(jie)螺栓孔，其(qi)連(lian)(lian)(lian)接(jie)結(jie)合面(mian)上(shang)設有(you)密封(feng)(feng)圈安(an)裝(zhuang)環(huan)(huan)形槽。本(ben)實(shi)用(yong)新型通過設置的環(huan)(huan)形槽配裝(zhuang)密封(feng)(feng)圈，使塑料(liao)法(fa)(fa)蘭根(gen)的密封(feng)(feng)連(lian)(lian)(lian)接(jie)變(bian)得(de)輕松(song)自如，密封(feng)(feng)性(xing)能(neng)好，也不(bu)必對連(lian)(lian)(lian)接(jie)法(fa)(fa)蘭實(shi)施(shi)過大(da)的鎖緊力，容易(yi)施(shi)工，保護了法(fa)(fa)蘭，大(da)大(da)延(yan)長了法(fa)(fa)蘭的使用(yong)壽命，可(ke)替代(dai)鋼制法(fa)(fa)蘭使用(yong)，本(ben)實(shi)用(yong)新型特(te)別適應于礦井(jing)中(zhong)的負壓抽瓦斯管材的連(lian)(lian)(lian)接(jie)。