RTJ (Ring Type Joint)
Ring joint gaskets are precision manufactured metal ring joints predominantly used in high pressure oilfield applications and for processing industry duties. They are manufactured in the UK. James Walker Moorflex is licensed by the American Petroleum Institute to apply the API monogram to gaskets in accordance with API 6A PSL4. It was first registered in 1963.
Specifications available to API 6A (oilfield use) and ASME B16.20 (general use) standards to fit ASME, BS and DIN flanges.
Spiral wound gaskets
gaskets will seal flanges where temperature, pressure, vibration and flow rates are beyond the capability of conventional jointing materials. They are used worldwide for pipelines and pressure vessels on steam, petrochemical, nuclear, marine and hydraulic plant, as well as on heat exchangers.