Minseal 1400L PTFE Packing is braided with Pure Virgin PTFE (Teflon) filament, treated with inert and heat resistant lubricant. 1400L packing is resilient, chemical resistant, self-lubricating, and can withstand high linear speed and pressure with minimum wearing to the shaft. It can be used in various pumps and valves, especially good for pump applications with corrosive media, high speed, or applications that require clean and minimum contamination material, such as food or pharmaceutical processing.