网页aijiren Tech™ 8mm Autosampler Vial Crimp Caps. 8mm Crimp Top Closures provide a leak-resistant seal, feature 4mm openings and are available with a variety of septa materials with and without liners. 10. aijiren Techbrand™ Screw Neck Vial, 15-425 thread, Amber Glass. Screw Neck Vials for storage purposes made out of 1st hydrolytic class glass.