Twineflon is a polytetrafluoroethelyne ptfe thread for sealing metal and plastic threaded pipe joints chemical resistant to the most aggressive chemicals solvents fuels and acids it remains functionally stable in a temperature range from 200c to 43 240c made from 100 ptfe for sealing metal and plastic threaded pipe joints it is not flammable as well as having no effect on the process fluids in the pipes non hazardous material with no limitation on shelf life unused product remains safely pr