Sterling Seal PTFE-0.38x12-RDx10 PTFE Teflon Rod, 3/8" Diameter x 12" (Pack of 10) 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