Subsea Gaskets is able to provide specialist machined seals that are designed for use in subsea wellhead, mudline and tree equipment within the scope of API17D to distinguish subsea Ring Type Joints from those used top side,the suffix “S”is applied to indicate the additional pressure passage hole in the ring cross-section this additional requirement is to prevent pressure lock occurring when connections are assembled underwater. API17D provides two drilling options for the pressure passage holes, option aand option Bas shown other than the addition of the pressure passage holes, all other physical aspects of the API 17D SBX ring type Joint is the same as the API 6a BX ring type Joint. It should be noted that API 17D no longer supports the use of SRX ring type joints (API 6a RX ring type Joints with subsea drillings), however, when opening flangeson existing equipment replacement SRX ring type Joints may be used.
