Rubber seal ring is an annular cover consisting of one or more parts, which is fixed on one ring or washer of bearing and contacts with another ring or washer or forms a narrow labyrinth gap to prevent oil leakage and foreign invasion. Metal rubber sealing ring is made of metal rubber, which is a homogeneous elastic porous material. It not only has the elasticity of rubber, but also has the excellent characteristics of metal. It can work at - 150 ~ 800 C. At the same time, it can also bear pressure, which has the dual function of bearing pressure and sealing in a certain range. Its use mainly includes the following points:

1. FRP pipe; FRP sandwich pipe; FRP pipe jacking; cable protection pipe; flue gas desulfurization pipe; coal mine gas drainage pipe; power plant desulfurization and dust removal pipe;

2. Sealing of municipal water supply and drainage pipelines;

3. Sealing of various process pipelines (petroleum, chemical, metallurgical, paper-making, sewage, seawater desalination, food brewing, beverage processing, medicine, etc.);

4. Sealing of sewage collection and transportation pipelines and intermediate water pipelines;

5. Sealing of main drinking water pipeline and distribution pipe;

6. Sealing of oil field water injection pipe;

7. Sealing of Hot Water Pipeline and Hot Spring Pipeline