不使用该外挂万向节,在长时间使用下,会产生铁氟龙管的磨损(见图片4),从而影响密封或者铁氟龙管断裂隐患。
Without the use of this external gimbal, under prolonged use, wear of the Teflon tube will occur (see picture 4), thus affecting the seal or the potential for Teflon tube breakage.