Cap Liners Improve Airflow

Two new full-face foam liners maintain the structural integrity of chemical container for agricultural and household uses. The 3FL-363 and 3FL-373 cap liners resist many aggressive chemicals — toilet cleaners, stain lifters, pipe clog removers, and organic fertilizers — without requiring any changes in formulation.

The liners prevent packaged chemical products from releasing or consuming gases, which cause plastic containers to collapse, swell, leak, or even burst. The cap liners let containers breathe without leaking and maintain maximum airflow. Venting is through a hole in the cap (3FL-363) or through the threads of a cap without a hole (3FL-373).

The 3FL cap liners have multilayer construction with an ePTFE (polytetrafluoroethylene) membrane bonded across the face of the liner. This lets gases be released inside and outside the container, while preventing liquids from leaking out and contaminants from entering. The liners are only 1 mm thick and repeatedly reseal in use.

W. L. Gore & Associates Inc. –Portable Electronic Vents, 401 Airport Rd., Elkton, MD 21922, (800) 523-4673