Profile: Flexitallic Ltd supplies industrial static sealing products. Our products include spiral wound gaskets, semi-metallic gaskets, RTJ gaskets, kammprofiles, sheet gaskets & dynamic and static packings. The metallic ring type joint is used in the petroleum industry. They are mainly used in the oil field on drilling and completion equipment. Ring type joints are also commonly used on valves and pipework assemblies, along with some high integrity pressure vessel joints. Sigma® is developed for processes ranging from cryogenic temperatures to 500°C (260ºC), and suitable for sealing virtually every chemical medium across the entire pH range (0-14), it pairs the outstanding chemical resistance of PTFE with enhanced dimensional stability to improve overall material stress retention. The non stick properties of the Sigma® range materials offer removal after usage to dramatically reduce the downtime on shutdown.