Vials Ptfe Cap found in: 2mL 8mm scrw vial+cap PTFE/sil 100/pk, PTFE/Silicone Septa for Storage Vial Caps, Clear Screw Thread Vials with PTFE Lined.. Vials with open top caps (9711B25, B55) Borosilicate glass Consists of screw-necked vials and 9711C10 series open-top screw caps.