A rubber ring and a metal ring are integrally bonded and vulcanized. It is a sealing ring used to seal the thread and flange connection.
The ring includes a metal ring and a rubber gasket. The metal ring is treated with rust prevention, and the rubber ring is generally made of oil-resistant nitrile rubber or fluorine rubber. The combination pad has two sizes, metric and imperial. There is a combination of metal pad and rubber specified in the standard JB982-77. The combined sealing washer is used for threaded pipe joints and screw plug sealing. It is generally used together with bite-type pipe joints to block the oil port. It is mainly used for static sealing of the end face of the threaded connection of hydraulic valve pipe joints. It is suitable for British and American standards. Static sealing of the end face of the connection between inch thread and French and German standard metric thread. Combined sealing gaskets can be divided into A-type and B-type according to the structural form; according to the different encapsulation, it can be divided into full-packed and semi-packed.
