Ring Joint Seal Gasket 1.Type:R,BX,RX2,Size:R11-105,RX20-215, ... steel, soft iron, inconel600, M-400, C-276, 10#,ss316,ss304.8.Application: W/N flange, gate valve, oil&gas industry ... temperature(degrees)soft iron90450carbon steel120450F51150540304160600316160600 API 6A Seal Ring Joint Gasket