我厂子1981年,实现了7L-100/8型空压机的无油润滑。现介绍如下: (一)活塞环背压密封原理及应用首先将低压缸采用南京塑料二厂制造的填充F-4活塞环。这种环具有塑性,可以自动适应气缸工作面的形状达到紧密接触,其密封主要依靠气体压力作用(图1)。 I plant in 1981, to achieve the 7L-100/8 air compressor oil-free lubrication. Are introduced as follows: (A) Piston Ring Back Pressure Seal Principle and Application First low-pressure cylinder manufactured by Nanjing Plastic Factory filled F-4 piston ring. This ring is plastic, can automatically adapt to the shape of the cylinder face to achieve close contact, the seal depends mainly on gas pressure (Figure 1).