Rubber sealing ring is a common sealing raw material. It has excellent toughness and abrasion resistance, and can adapt to different working atmosphere. Plastic sealing ring type is also very much.
Polyurethane material sealing ring is a kind of high-performance sealing raw material. It has high strength and abrasion resistance and is suitable for continuous high temperature, high voltage and fast working atmosphere. Polyurethane material sealing ring has a longer service life than plastic sealing ring.
PTFE sealing ring is a kind of sealing raw material with very high chemical resistance. It has excellent corrosion resistance and heat resistance, suitable for strong acid and alkali natural environment and high temperature conditions of the seal.
Metal sealing ring is a selection of metal materials made of sealing components. It has excellent compressive and heat-resistant properties, and is suitable for sealing under high pressure and high temperature environment and corrosive conditions. There are many types of metal material sealing ring.
Ceramic sealing ring is a kind of sealing component made of porcelain material. It has excellent corrosion resistance, abrasion resistance and heat resistance, and is suitable for sealing under strong alkali, strong acid and high temperature conditions.
Graphite sealing ring is a selection of high-purity graphite material made of sealing components. It has excellent corrosion resistance, wear resistance and heat resistance, and is suitable for sealing under strong alkali, strong acid and high temperature conditions.
Advantages of sealing ring
1, Has good activity and adaptability, can compensate for the relatively large size tolerance and direction error, can prevent the internal structure of vegetable grease or hydraulic oil leakage, but also can avoid the external seepage of water or dust invasion.
2, Has a good sealing performance, and with the pressure to enhance the sealing performance can be automatically enhanced.
3, Sliding friction should be low, friction resistance should be smooth.
4, Strong corrosion resistance, not easy to aging, long service life at work
5, Good abrasion resistance, damage can be automatically corrected to a certain extent.
6, Compact structure, application, easy maintenance, proper routine maintenance can be used for a longer time.
7, Heat shrink film utility to be low, to simple production and processing of molding, and can also maintain precise specifications, do not erode the contact area, not environmental pollutants.
Seal ring production regulations
1. The sealing ring must have sufficient strength and rigidity.
In the long-term nature of the work will be easy to bad, will not cause very serious deformation, not too smooth can still maintain the sealing.
2. Seal ring surface should also have the characteristics of corrosion resistance.
Because there are substances will have the ability to corrode sealing ring, in accordance with its chemical properties to determine.
3. The sealing ring should also have very good resistance to high temperature and impact resistance. Therefore, the choice of material has a very good ability to resist high temperatures.
4. Seal ring also have a little friction resistance and certain wetting ability, seal ring material and honey peak liquid also need to have very good infiltration. Centrifugal pumps produce polishing is not easy to destroy this seal ring.
Application of sealing ring need to pay attention to
1. It is not possible to install the wrong target and destroy the mouth edge.
Any scarring of 50μm or more on the nozzle edge will result in very noticeable oil seepage.
2. Avoid forced installation.
Can not use the hammer to beat in, but have to use common tools to press the sealing ring first on the seat hole, and then change the simple drum maintenance mouth edge according to the spline shaft position. Before construction, you need to wipe some grease on the lips, which is conducive to the assembly and avoid pre-running burns, need to pay attention to clean up.
3. Avoid overdue application.
Sealed plastic seals service life is generally 3000 ~ 5000h, need to replace the new seal ring in time.
4. Remove and replace the seal ring size to be consistent.
Must be in accordance with the provisions of the instructions for use, the same specifications of the seal ring, otherwise it can not guarantee the tightness of the card and other conditions.
5. Try to use the old sealing ring.
When applying new sealing rings, it is also necessary to carefully scrutinize the quality of the surface layer and make it clear that there are no shortcomings such as small round holes, protrusions, cracks and concave grooves, etc., and that there is sufficient elasticity to be used again.
6. In the installation, first of all, the opening of the hydraulic transmission system should be cleaned up harshly in all parts, it is recommended to use commonly used tools to prevent the sharp edges of the metal material will be scratched fingers.
7. When dismantling and replacing the sealing ring, we should strictly check the sealing ring groove, eliminate the waste and polish the bottom of the groove.
8. In order to avoid damage caused by oil seepage, must be in accordance with the technical specifications of the actual operation, and at the same time, can not be long-term overload will also be placed in a more severe environment for the operation of the equipment.
