High Pressure ASME API Flange Gasket 1. Octagonal, Oval or lens 2. R,BX,RX ... -215 BX150-303 4.Swift Delivery High Pressure ASME API Flange Gasket1.shape: Octagonal, Oval or lens2.type: R,BX,RX3 ... steel, soft iron, inconel600, M-400, C-276, and so on8. Application: W/N flange, gate valve, oil&gas industry, oil christmas ... and meet our customer's demands. High Pressure ASME API Flange Gasket