A vacuum-tight seal is created with the open top compression cap and FKM o-ring to allow adjustable immersion of thermometers

·         Cap is suitable for use to 150 °C

·         To use it as a septum port, just replace the o-ring with a PTFE-lined septum

·         Supplied with one FKM o-ring and one 410119 cap

·         Ref: ASTM Method D1744

·         Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements