20mm Crimp Top Headspace Vial Torticollis headspace sample vial, 10mL or 20mL volume, flat-bottomed or round-bottomed 20mm crimp top vial cap to ensure consistent safety sealing. Crimp Neck Vials – Distribution LabSphere inc. Products 1 – 22 of 22 La-Pha-Pack La Pha Pack 20 09 0795 Headspace-Vial, 10ml, 46 x 22.5mm, clear glass, 1st hydrolytic class, DIN Crimp Neck, long neck,