The Kammpro-ORJ is sized to the standard octagonal API 6A or ASME B16.20 dimensions but with the addition of the Kammpro design applied to the sealing areas and faced with oxidation inhibited flexible graphite. This design is ideal for applications where cracking or embitterment has been experienced in ring joint groove. It is available in a large variety of metal material and it can be fabricated as custom engineered designs.