Aero-Flex supplies both Aerospace & Industrial PTFE & rubber hoses to our customers. PTFE is an engineered fluoropolymer. It has outstanding resistance to chemicals and is one of its primary characteristics. With a temperature range of -100°F to 500°F, this hose material is actually suitable for the majority of fluid and ambient temperature conditions. Also an extremely low coefficient of friction provides a non-stick surface. Additionally water absorption of PTFE is negligible, less than 0.01% by ASTM test. More importantly it is also FDA-approved for food and pharmaceutical use. Additionally PTFE will withstand flexing and vibration without failure from flex fatigue. PTFE is chemically inert, it will not break down or deteriorate in service. Above all it has an unlimited shelf life because properties do not change with age or exposure to weather.
PTFE hose inner core comes in two types of configurations. Smooth Bore is where the ID of the hose is smooth. If precise flow control is a priority, you should choose smooth bore. This is possible because there are no irregularities in the wall that can cause interruptions. Smooth bore also promotes self draining. Convoluted hose core promotes flexibility in your hose and is used when flow control is not an issue and flexibility is important.