http://goodrichgasket.com/API-6A-Ring-Type-Joint-Gasket-17D-RTJ-R-RX-BX.asp | RTJ (Ring Type Joint) gaskets are manufactured in accordance with API-6A, API-17D and ASME B16.20 specifications. RTJ's have "R, RX and BX" numbers assigned to them for pipe size...
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http://goodrichgasket.com/API-6A-Ring-Type-Joint-Gasket-17D-RTJ-R-RX-BX.asp | RTJ (Ring Type Joint) gaskets are manufactured in accordance with API-6A, API-17D and ASME B16.20 specifications. RTJ's have "R, RX and BX" numbers assigned to them for pipe size and pressure class identification. Stock materials include Soft Iron, Low Carbon Steel, F5, F11, F9, 304, 304L, 316, 316L, 321, 347, DUPLEX, Monel, NICKEL, 410, Inconel and Incoloy.
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