格莱圈由一个橡胶O型圈及聚四氟乙烯圈组合而成。O型圈施力，格来圈为双作用活塞密封。
摩擦力低，无爬行，启动力小，耐高压。
孔用格莱圈规格：
GSF0200L20*15.1*2.2GSF0600H60*44.5*6.3
GSF020020*12.5*3.2GSF063063*52*4.2
GSF0240L24*19.1*2.2GSF0630H63*47.5*6.3
GSF024024*16.5*3.2GSF064064*53*4.2
GSF025025*17.5*3.2GSF0640H64*48.5*6.3
GSF0250H25*14*4.2GSF065065*54*4.2
GSF028028*20.5*3.2GSF0650H65*49.5*6.3
GSF0280H28*17*4.2GSF070070*59*4.2
GSF030030*22.5*3.2GSF0700H70*54.5*6.3
GSF0300H30*19*4.2GSF075075*64*4.2
GSF032032*24.5*3.2GSF0750H75*59.5*6.3
GSF0320H32*21*4.2GSF0800L80*69*4.2
GSF035035*27.5*3.2GSF080080*64.5*6.3
GSF0350H35*24*4.2GSF0850L85*74*4.2
GSF036036*28.5*3.2GSF085085*69.5*6.3
GSF0360H36*25*4.2GSF0900L90*79*4.2
GSF038038*30.5*3.2GSF090090*74.5*6.3
GSF0380H38*27*4.2GSF0950L95*84*4.2
GSF0400L40*32.5*3.2GSF095095*79.5*6.3
GSF040040*29*4.2GSF1000L100*89*4.2
GSF0450L45*37.5*3.2GSF1000100*84.5*6.3
GSF045045*34*4.2GSF1050L105*94*4.2
GSF0480L48*40.5*3.2GSF1050105*89.5*6.3
GSF048048*37*4.2GSF1100L110*99*4.2
GSF050050*39*4.2GSF1100110*94.5*6.3
GSF0500H50*34.5*6.3GSF1150115*99.5*6.3
GSF052052*41*4.2GSF1200120*104.5*6.3
SGF0520H52*36.5*6.3GSF1250125*109.5*6.3
GSF055055*44*4.2GSF1250H125*104*8.1
GSF0550H55*39.5*6.3GSF1300130*114.5*6.3
GSF056056*45*4.2GSF1300H130*109*8.1
GSF0560H56*40.5*6.3GSF1350L135*119.5*6.3
孔用格莱圈安装：格莱圈是油缸密封,安装和装配,先安装O型圈之后安装格莱圈的耐磨环,小规格的一般采用直接安装的办法,用油加热，油温不能太高,耐磨环软了就可以了然后套到轴上,冷却后就可以了.大规格的格莱圈专业的话采用锥形套筒，从套筒的小头逐渐推向大头，最后推到沟槽内，虽然聚四氟乙烯是高效耐用的密封材料，但为避免损伤密封唇而导致在正式投入使用前发生泄漏，安装时仍须特别小心。