Sterling Seal PTFE-0.50x12-RDx5 PTFE Teflon Rod, 1/2" Diameter x 12" (Pack of 5) 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