Sur-Seal PTFE-2.50x12-RD PTFE Teflon Rod, 2-1/2" Diameter x 12" Sterling Seal & Supply Teflon PTFE rod surpasses most plastics when it comes to chemical resistance and performance in extreme temperatures Sterling Seal & Supply Teflon PTFE rods resist most solvents and is an excellent electrical insulator Sterling Seal & Supply Teflon PTFE rods can be used outdoors Temperature range : minimum -350F to maximum 500F