Select septa based on the injection port temperature you will use. Generally, septa with lower thermal limits are softer, and thus are easier to seal or to pierce with a needle. However, softer septa are more prone to damage caused by over tightening the septum nut, and this can reduce the life of the septum. Change all septa regularly, regardless of their thermal limits, to avoid coring and bleed. Use
Thermolite® septa at inlet temperatures to 340°C,
BTO® septa to 400°C, and
IceBlue™ septa to 250°C.
