China 20mm Crimper for 20mm Crimp Caps Seals Manufacturers 4).10/20mL Clear /Amber Precision Crimp Headspace Vial, Flat/Round Bottom, 22.5*46mm . 5).PTFE/Silicone Septa Φ20*3mm Temperature Resistant -60℃-200℃ with 9mm thread. 6).Crimp-top Aluminum Cap, 10mm Centre Hole Φ20m 20mm Crimp Top Headspace Vials for Aijiren–Aijiren Vials for Headspace crimp vials, the value have 6ml,10ml, 20ml