This document discusses the use of Birkosit - Dichtungskitt®, a product manufactured by A.I. Schulze Chemotechnische Fabrik e.K., for sealing metal-to-metal joints in flanges and housings. It lists various applications for flanges in apparatus, pressure vessels, bearings, baskets, and more. The company produces flanges according to standards like ASME, ANSI, DIN, and others in all sizes, especially medium and large dimensions, and can make custom flanges per customer drawings. Birkosit - Dichtungskitt® is recommended for use between flange parts.