Specifications: Precision fabrication Filmtec elements are produced by precision production methods that reduce the chance of element failure. Beginning with the highest quality raw materials, filmtec elements are built to optimum physical tolerances using advanced automated manufacturing equip-ment and a highly controlled manufacturing process that features sonic-welding of critical fastening points. This ensures higher element consistency. After fabrication, filmtec elements are subjected to extensive quality testing to make sure that our fabrication standards are met. The quality control process includes visual and vacuum glue line testing, and wet testing to confirm rejection and flow performance. As a result, filmtec elements exhibit minimum element-to-element variation and provide con-sistent, predictable and reliable performance.