ASA flange systems are bolted style flanges that range from 1" tube (100 ASA) to 12" tube (1000 ASA) sizes. Each flange group (100, 150, 200, etc) is offered as a blank (no center hole) and in two to five tube sizes, grooved or not grooved, and rotatable or non-rotatable. An elastomer seal (o'ring) is compressed between two flanges when the nuts and bolts are tightened. High vacuum rated from atmosphere to t x 10-? ton and from -1SC to TSOC.
