1. Type: R, BX, RX, IX 2. Shape: Octagonal, oval, lens 3. Size: R11-105, RX20-215 BX150-303, ... inch 1/2''-inch24'' Types of gasket: Serrated, octagonal, elliptic, lens-shapedMaterials: Carbon steel, OCr13, 1Cr18Ni9, 304, 316Temperature: -100 ... high pressure pipeline, container,equipment and etc.Specification:DN10-800mm Octagonal Ring Joint Gasket