Temperature Range -65 F to 450 F. Meets or exceeds SAE 100R14 specifications. Tef-Line Products smooth bore PTFE with stainless steel braid is one of our most versatile lines. It is an ideal choice for media such as food, beverage, adhesives, paints, pneumatics systems, automotive, and hydraulic. Fitting materials from stainless steel, brass, or carbon steel are available in both swage or crimp.