GFO with Kevlar in the corner Graphite-PTFE fiber with Kevlar yarn packing is braided with Combination yarn of PTFE with incorporated graphite and reinforced edges from aramid yarn to prevent gap extrusions within the high pressure and temperature range. Good sliding velocity and thermal conductivity. It is recommended for piston pumps up to 500 bar long service live. It can be used to seal water, sewage water, hot water, oils, greases, gases, weak acids and alkaline solutions, abrasive media. Temperature: 280¡æ PH: 2-12 Line speed:15m/s Pressure£º150Bar Density£º1.5g/cm3