Results 1 – 30 of 124 Vial crimp seals, BiMetal (magnetic), 20 mm, with PTFE/silicone septa, pkg 100 · 29178-U green seal, PTFE/silicone septa, diam. × thickness Aijiren 20mm Open Top Aluminum Crimp With Ptfe Silicone Septa . Packaging Details: Normally, 100pcs/pack. Vials packed in PP-Trays with plastic film and cover plate.