The single coil - spring and flexible bellows design provides self - alignment which automatically adjusts to compensate for shaft endplay , run out , primary sealing ring wear , reverse pressure and equipment tolerances 單螺旋彈簧和柔性波紋管用于自排列,能夠自動調(diào)節(jié)補償軸所受到的排擠,溢出,主密封環(huán)磨損,反壓力和設備公差。