MTI Corp Quartz Tube: 25 OD x 22 IDx 450 L mm (1" D x 17.7" L) OTF-1200X-S25-110v Replacement Tube - EQ-QZTube-25GE-450
MTI corporation provides the high purity Quartz tube as replacement part for high temperature tubing furnaces in universities, companies, and national labs.