The oil-free lubrication air compressor uses a filled PVC + Teflon + graphite piston ring and a guide ring is a self-lubricating element. Its self-lubricating principle relies on filling the PTFE graphite and the corresponding counter-grinding metal surface. At the initial run-in, a very thin self-lubricating film composed of filled polytetrafluoro graphite molecules is formed on the friction surface. Once the self-lubricating film is established, the movement of the filled polytetrafluoroethylene is improved, and thereafter the frictional surface filled with the PTFE graphite ring is in the relative friction between the filled polytetrafluoroethylene graphite molecules, and the friction coefficient. Significantly reduced, only stable micro wear occurs.

PTFE, wear-resistant, high temperature resistant, self-lubricating, long-lasting, without damaging the cylinder. There are two kinds of materials, one is pure PTFE, also called PTFE, one is PTFE added graphite or PTFE added carbon fiber material, PTFE piston ring, guide ring, throttle ring is a substitute for asbestos packing, casting The new sealing material of steel piston ring has the characteristics of wear resistance, high temperature resistance, long service life, convenient maintenance and replacement, etc. It can protect the smoothness of the piston body and the inner wall of the cylinder and make it less susceptible to wear.

Due to the above characteristics, PTFE has been widely used in chemical machinery, electrical, electronics, metallurgical smelting, defense aerospace, instrumentation, metal surface treatment, pharmaceutical, medical, textile, food and other industries, making it irreplaceable. product. Filled with PTFE bearings for food chemical papermaking, textile machinery; porous copper impregnated fluoroplastic metal bearings, can be used under high temperature and high pressure dry friction, vacuum conditions.