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Aijiren Aluminum Crimp Caps for GC Vials
https://www.hplcvials.com/products/6-20ml-gc-headspace/20mm.html

Aijiren Aluminum Crimp Caps for GC Vials

The 20mm Crimp Top Caps produced by Aijiren have a diameter of 20mm and a center hole with a diameter of 9.5mm. The color is the silver color of aluminum itself, which is very modern and beautiful. The matched septa are all 20*3mm, and the double-sided synthetic septa ensures the sealing.

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