Adapter Lower Ground Mouth Size 24/40 Upper Ground Mouth Size 24/40 Overall Length 75 mm USP Specification Type I Product Type Adapter Type Adapter Material Borosilicate Glass Color Clear Autoclavable No Features 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 Degrees C Replace the O-Ring with a PTFE-Lined Septum Standards Not Applicable ASTM Specification E438