RX Series are interchangeable with R series octagonal gaskets designed for API 6B flanges. RX outperforms the R series in situations that have higher pressures with more intense vibrations. RX gaskets are available up to 5000 PSI
Style R is the original ring joint gasket design which can be used in modern flanges having the standard ring joint flat-bottom groove as well as older flanges with the round bottom groove style
