The Ring Type Joint was initially developed for high pressure/temperature applications found in the petroleum industry and is primarily used in the oil field on drilling and completion equipment. However, today this product range can also be found on valves and pipework assemblies, along with some high integrity pressure vessel joints. Standard Style R Ring Type Joints are manufactured in accordance with both API 6A and ASME B 16.20 size/ratings. Available in both oval and octagonal configurations, both types are interchangeable on the modern octagonal type grooved flanges. As with all solid metal Ring Type Joints including Style R, it is recommended to replace the ring when flange connection is DIMENSIONAL DATA - STYLE R TOLERANCES: (INCHES) P (average pitch diameter of ring) ±0.007 Flexitallic Style R Ring Type Joints can be manufactured in accordance with all relevant standards to suit the following flange