a hollow fiber membrane fluid transport device and its method of manufacture are disclosed wherein the fibers are comprised of polytetrafluoroethylene , and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials . the potting method described herein , utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film , allows for ease of manufacture without destruction of the ptfe hollow fibers , with high packing densities , and without the processing complexity of pre - melting , extruding , or chemical crosslinking of any polymeric adhesives . furthermore , the ptfe hollow fibers can be treated with a fluoropolymeric solvent solution before the chemically resistant film is applied to enhance the adhesion of the ptfe fiber to the film . ptfe hollow fibers , and its respective fluoro - co and terpolymers as potting films , impart high packing densities , superb chemical resistance and temperature resistance without membrane contamination , or low fiber pull strength , as is sometimes observed with standard potting materials such as polyurethane and epoxy .