Globe Scientific's polyethylene (PE) flanged plug caps provide exceptional leak-resistance in test tubes, centrifuge tubes and round cuvettes. They feature two flexible flanges that press firmly against the inside wall of the tubes, thereby providing better leak-resistance than standard plug caps.The caps are available in a 12mm, 13mm and 16mm sizes and in 9 beautiful colors for sample identification purposes.
Made of high-quality polyethylene, these colorful plug caps are flanged to ensure a tight closure. Three sizes available to fit 12-mm, 13-mm, and 16-mm test tubes.