活塞式无油润滑压缩机的导向环是保证活塞正常工作的关键零件。目前普遍使用的四氟导向环是切口式的,它的结构与活塞环相同,所以,除了起导向环的作用外,还起活塞环的作用。导向环一般都装在活塞压缩侧的头部,承受着较大的压差,其PV值大于各道活塞环,所以切口式导向环的磨损较快,寿命较短。在高压压缩机中,切口式导向环的缺点更加显著。四氟整体式导向环克服了切口式导向环的 Piston oil-free lubrication of the compressor guide ring is to ensure the normal operation of the piston key components. Currently used PTFE guide ring is a notch type, its structure and the same piston ring, so, in addition to the role of the guide ring, but also play the role of piston rings. Guide rings are generally mounted on the piston compression side of the head, subject to a larger pressure difference, the PV value is greater than each piston ring, so the notch guide ring wear faster, shorter life expectancy. In high-pressure compressors, the disadvantage of the notched guide ring is even more pronounced. PTFE integral guide ring to overcome the incision guide ring