... We supply various of PTFE products., all kinds of elements, insulators. machine lathed products per customer's drawings.1, ... -proof performance.2,usageIt is applied for airproof of oxygen-generator , compressor and other machine.3,specification Form ... ,Kaifeng air switch equipment factory,Hangzhou oxygen-generator,Harerbin oxygen-generator an so on. PTFE products, fittings, sealing elements,insulators