High Pressure ASME API Flange Gasket 1. Octagonal, Oval or lens 2. R,BX,RX 3. R11-105,RX20-215 BX150 ... -303 4.Swift Delivery High Pressure ASME API Flange ... Gasket1.shape: Octagonal, Oval or lens2.type: R,BX,RX3.size: R11 ... API Standard and meet our customer's demands. High Pressure ASME API Flange Gasket