A PTFE  plain hose, also known as a Teflon plain hose, refers to a flexible hose made of PTFE material without any additional braided or reinforced layers. It consists solely of a PTFE inner core and does not have an external wire braid or cover. Here are the key aspects of a PTFE/plain Teflon hose:

1. PTFE Inner Core: The hose is constructed with a smooth bore PTFE (Polytetrafluoroethylene) inner core. PTFE is a synthetic fluoropolymer known for its excellent chemical resistance, high thermal stability, and low friction properties. The smooth inner bore allows for smooth fluid flow with minimal pressure drop.
2. Non-Stick Properties: PTFE exhibits exceptional non-stick properties, which means that substances are less likely to adhere to its surface. This characteristic reduces the risk of contamination or blockages in the hose, ensuring the smooth flow of fluids.
3. Chemical Resistance: PTFE is highly resistant to a wide range of chemicals, acids, and solvents, making it suitable for handling corrosive fluids without the risk of degradation or contamination.
4. High Temperature Stability: PTFE plain hoses can withstand high temperatures, typically ranging from -70°C (-94°F) to 260°C (500°F). This thermal stability allows them to be used in applications where the conveyed fluids are at elevated temperatures.