Wheaton® Headspace Vial 20mm Pressure Release Aluminum Seals

These Wheaton® aluminum seals are designed for glass headspace autosampler vials and feature a special crimp closure with a bridge and scoreline in the aluminum seal. This design is an added safety feature which allows the internal pressure to be released when 3.0bar (±0.5) has been exceeded. Available with your choice of septa which are tightly bonded to the seals for a secure, leak-proof crimping to your lab vial or bottle. Fits 20mm headspace vials.