100% virgin FEP resin Excellent UV transmission Low permeability High thermal stability Excellent clarity Moisture absorption nearly zero Does not impart taste, odor or contaminants Non-flammable Tubing is self-extinguishing SpecificationsMaterial: FEP/Fluorinated Ethylene Propylene 'Teflon'Color: ClearInside Diameter: .25" or 1/4"Outside Diameter: .375" or 3/8"Wall Thickness: .062"Length: VariousMax Pressure: 1154 PSI at 72°FOperating Temp. Range: -100°F to 400°FTensile Strength: 3000 PSI