API 6A Valves Parts Ring Joint Gasket 1.type: R,BX,RX,IX 2 ... ASME B16.20standardised productionSwift deliverySpecialized gasket supplierAPI 6A ring Joint Gasket (RTJ) 1.type: R,BX,RX,IX ... 2 shape: octagonal, oval, lens 3 .size: R11-105,RX20-215 BX150-303, inch 1 ... and specific drawings. Besides, our ring joint gasket could seal your products perfectly. our production is ...