A method for improving the magnetic performance of at least one magnetic transducer operating within a hard disk drive. A power line interface connects to a power line serving as a communication medium. A first flexible element extends between first and second fixing devices of the first sealing strip, and a second flexible element extends between first and second fixing devices of the second sealing strip. A resin product comprising an anion exchange resin with a coating of perchlorate-destroying microorganisms on its surface is also disclosed.