Septa N 20, Butyl/PTFE, light gray/dark gray, 3.0 mm, 50° shore A 702057

Replacement septa are not offered for all cap types and sizes, as manual assembly is not recommendable due to contamination risk and possible wrong side orientation. Nevertheless, for the most common sizes and septa materials we offer them along with the appropriate empty caps. Butyl/PTFE septa with a temperature resistance of -40 °C up to 120 °C and a medium analytical purity.