Nalgene™ HDPE Tamper Evident Closures are specially designed for use with PET/PETG square media bottles.

• Available in 38-430 finish
• Natural HDPE closures are ADFC (Animal Derived Component-Free)
• Fits Nalgene PET and PETG Media Bottles with 38-430 neck finish (except 125mL PETG Media Bottles)
• Leakproof Guarantee when used with Nalgene PET and PETG Media Bottles
• Easy application and breaking of the tamper evident seal ring
• Gamma irradiated to provide 106 Sterility Assurance Level (SAL)
• Flat top surface for possible printing or labeling