1.Oval  ring joint gasket is the type of mechanical compression, 

2、Oval ring joint gasket is used in 6B flanges with standard flanged connections

3、Oval  ring joint gasket can be used interchangeably with R octagonal ring gasket and RX ring gasket；

4、oval ring gasket can be used in the filed in the case of the appearance with no damage；

5.The hardness of oval ring gasket must be 15-20hb lower than meting flange face hardness