Crimp caps, also known as aluminum seals, are designed to provide one of the most durable and secure vial seals when properly applied to compatible serum finish autosampler vials. They are commonly used in HPLC, GC, LC‑MS, GC‑MS, and headspace GC applications where long‑term sealing performance and sample integrity are critical.
When correctly crimped, aluminum caps deliver consistent compression of the septum against the vial opening, helping to minimize evaporation, leakage, and sample loss. Proper crimping technique is essential—excessive force can lead to vial damage or septum deformation, while insufficient compression may result in poor sealing and inconsistent injections.
This subcategory includes standard aluminum crimp caps, safety crimp caps, and septa‑only options. MICROSOLV™ crimp caps are manufactured with high‑quality, pre‑inserted septa, while open‑hole aluminum caps are available for applications that require separate septa selection and manual insertion.
Soft‑Guard™ septa are a widely used option for crimp caps, offering a controlled durometer that supports smooth needle penetration and reliable resealing, helping to reduce injector wear and missed injections. Aluminum crimp caps are non‑magnetic, making them suitable for a wide range of analytical and automated workflows.
Additional resources:
