DURAN® Overcap 45mm, black Phenolic

DURAN® Overcap 45 mm, Black Phenolic The 45 mm phenolic overcap is screwed over the open-top aluminum screw cap GL 45 and covers the septum or stopper. The phenolic cap protects the septum or stopper from damage and contamination during storage or transport. Phenolic caps offer a wide range of chemical compatibility and temperature tolerance. Special features and benefits: Extra protection - Optional 45 mm protective cap to seal open top closure Application: sampling, shipping, packaging