The GraphiTech Monoblock graphite rupture discs require no holder and can be mounted directly between ANSI flanges. Where vacuum conditions may be present, we offer the disc with additional vacuum support in the form of either a bar or a dial (GTMV). Where the process conditions involve substances that may react with graphite, we can supply an inverted version of the disc (GTI). The process side of the GTI is flat, allowing the addition of a TFE grade fluoropolymer liner for enhanced corrosion protection.