Our Series SFS-PT Polytetrafluoroethylene (PTFE, also called Teflon) Front and Back Ferrule Sets for Tube are high-quality fittings designed to provide leak-proof connections in hydraulic and instrumentation systems. Ferrules are small but crucial components that grip the tubing, ensuring a secure seal when paired with tube nuts. The front ferrule creates a tight seal against the tubing, while the back ferrule supports the tubing, preventing slippage. PTFE ferrules are particularly valuable in systems that require excellent chemical resistance, high-temperature tolerance, and non-reactivity, making them ideal for use in industries such as chemical processing, pharmaceuticals, food and beverage, and semiconductor manufacturing. These ferrules help maintain the integrity of fluid systems by preventing leaks, offering durability and reliability in demanding applications.