Items 1 – 12 of 50 Headspace Vials & Caps · 20mm Open Aluminum Seal with PTFE/Silicone Septa (100pk) SKU: C4020-32A · 10ml Clear Flat Top Crimp Vial (100pk) SKU: Crimp cap – Sigma-Aldrich Results 1 – 30 of 30 Vial crimp seals, BiMetal (magnetic), 20 mm, with PTFE/silicone septa, pkg 100 · 29169-U red seal, PTFE/silicone septa, diam. × thickness 20