Kugelrohr bulbs having 14/20 standard taper joints on both ends to connect to other bulbs or single neck round bottom flasks.  adapter permits connection of Kugelrohr assembly to vacuum. 

If you need any other size or other Ground joints,please contact with us

Be Made From G3.3 Borosilicate Glass

Annealing Point ------560℃

Linear Coefficient of Expansion------ 33×10-7/℃

Softening Point------820℃