Subsea Ring Joint Gasket is the same in design to the RX and BX Ring. To distinguish from Junio 240RX/BX -Ring Type Joints JUNIO Subsea Ring Joint Gaskets- SBX, SRX Rings are manufactured in different solid metal types like soft iron/SS304/316/321 metal and other alloy items. the suffix s is used to indicate the additional pressure passage hold in the ring cross section. This is to indicate the additional requirement to prevent pressure lock when connections are made up underwater.