Notes: Custom Part: This is a bellows with its two ends welded to (1) a double sided 2 3/4'' flange and (2) an UltraTorr o-ring compression seal. The length of the extension (measured from base of CF flange to edge of inner UltraTorr connect) is 4.025''. This leaves room for glass tubulation to insert 0.4'' into the metal tubulation.
