20mm Crimp Top Headspace Vials & Caps| Chromatography 网页20mm Crimp cap with Silicone/PTFE septa (0.125" Thickness) Unit/Measure. PK/1000 Part No. CP-01-20-04 £316.00 Find out more Add 20mm Gold Magnetic crimp cap with Blue Silicone/Clear PTFE septa Ultra Low Bleed Get Price 20mm silanized crimp vials ultra low bleed ptfe septa