The combined retaining ring is made by bonding and vulcanizing the rubber ring and metal ring as a whole, and is a sealing ring used to seal the connection between threads and flanges. The ring includes a metal ring and a rubber sealing gasket. The metal ring is treated with rust prevention, and the rubber ring is generally made of oil resistant nitrile rubber or fluororubber. The combination retaining ring comes in two sizes, metric and imperial, with a combination of metal pad and rubber according to the standard JB982-77. The combination retaining ring is used for sealing threaded pipe joints and screw plugs. The combination retaining ring is generally used together with a sleeve type pipe joint to block oil ports, mainly used for static sealing of the end face at the threaded connection of hydraulic valve pipe joints. It is suitable for static sealing of the end face at the connection of British and American standard threads and French and German standard metric threads. The combined sealing gasket can be divided into Type A and Type B according to its structural form; According to the different types of adhesive packaging, it can be divided into full packaging and half packaging.

Description of the combined retaining ring:

The C-level combination retaining ring does not have the requirements for Ra3.2 and deburring.

2. The C-level combination retaining ring is suitable for medium assembly series, and the A-level is suitable for precision assembly series flat washers G B848-85 is mainly used for cylindrical head screws, while others are used for standard hexagonal bolts, screws, and nuts.

4. Material mechanical property level: steel 200HV; Austenitic stainless steel A200.

5. Marking example: Standard series, nominal size d=8mm, performance grade 200HV, plain washer without surface treatment: washer GB97.1-85 8 200HV