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<p>and tapes are sometimes used outside the primary closure structure. Additionally, many closures feature ventilation to prevent bloating, collapse, or explosion due to unequalized pressure during processing or storage. Venting technologies utilize common materials such as <a href="page.php?w=Polytetrafluoroethylene">PTFE</a>, <a href="page.php?w=Polypropylene">PP</a>, etc. These elements are preferred due to their ability to withstand temperatures of 260&nbsp;°C and water intrusion pressure levels of 770 mbar.</p>

<p><big>Screw top</big></p>
<p>A screw</p><p>
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