Caps & Septa for 2ml Crimp Top Glass Vial Crimps smoothly and easily no more sharp edges from an al umini m cap. Excellent sealing than Snap Top Vial Assists with Crimper and Decapper Part No Description CRX2000-2011 White PTFE/Red silicone septa + Aluminium cap with hole, for 2ml crimp top vial, 100/pk