This co-extruded material has an inner liner that protects against chemically aggressive fluids, and a soft, flexible outer layer that allows it to be used in a peristaltic pump. The tubing features chemical compatibility and an excellent tubing life and durability, especially when operating under pressure. There is minimal spallation of the outer coating, requiring less maintenance on the pump. The flexible outer layer also allows for easier handling and loading into the pump head. Chem-Durance 06432-series tubing is available in the MASTERFLEX L/S and I/P sizes.