... R11-105 4.certificate:API 6A valve parts---ring joint gasketsAPI 6A ASME B16.20standardised productionSwift deliverySpecialized ... gasket supplierAPI 6A ring Joint Gasket (RTJ) 1 ... BX150-303, inch 1/2-inch244.certificate:API 6A, ISO9001:2000 5. pressure: PN2.0(CLASS150 ... Incoly825, 321, 347,316,304,Gr.630(A264-17.4Ph) F5,F51,317L,904L 7.hardness:below ...