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This is a question often asked by many customers. The imported o ring suppliers belong to:
Among them, the O-rings made in Germany and Japan have the highest prices. The more well-known O-ring brands are American Parker, German COG, and German KGM. Japan's NOK, Italy's DUCI, Taiwan's WKF, etc.
So why are the prices of these brands many times higher than the prices of domestic O-rings? Where does their premium space come from? In the final analysis, the most important thing is the gap in product quality.
For example, American O-rings, German O-rings, Japanese NOK rings, Italian O-rings, and Taiwan O-rings basically have their own formula R&D teams in terms of raw materials.
There is also a very authoritative test platform for product testing, so imported O-rings are absolutely OK in terms of product quality. These well-known o ring suppliers fluoro collagen adhesives are generally purchased from world-renowned fluoro rubber raw material suppliers.
In terms of workmanship of O-ring products, the mold cost of general world-renowned brand o ring suppliers is also many times higher than that of domestic O-rings. Therefore, imported O-rings are more expensive than domestic O-rings in terms of tolerance and appearance. The circle is better.
In terms of raw materials for O-ring products, most of the world-renowned brands of O-ring original rubber are from world-renowned brands. And many domestic O-ring original rubbers are produced by purchasing domestic factories.
The effectiveness of vulcanized rubber O-rings should be better understood than everyone else. O-rings are used in hydro pneumatic system software and various industrial equipment and electronic devices.
It has a sealing effect when it is stationary or in fitness. This kind of o ring suppliers should have a good grasp of everything. But do you understand how to make the O-rings fully exert their effects?
First of all, o ring suppliers should understand that O-rings are usually not reusable many times. Secondly, when O-rings are installed in the pipe groove, pay attention to the need to distort the O-rings. And consider that the pipe groove Apply sealing material to the O-ring.
Also, it is better not to open the original packaging of the O-ring when the vulcanized rubber O-ring is not in use. To prevent the dust from adhering to the O-ring or infiltrating dirt will cause the O-ring to be damaged.
If the O-ring is to be stored, it should be minimized by sun exposure or placed around a high-temperature pyrogen. Such as a heating furnace to prevent early embrittlement of the O-ring.
It must be very clear to o ring suppliers that the O-ring seals may sometimes fade when stored. That is, the surface of the O-ring seal causes frost. But everyone need not worry. Subsequently, this situation is not easy to affect the O-ring seal Cause a negative impact.
O-rings are exposed to various environmental factors. Such as:
O-rings will be invalidated by changes in its physical properties. In the DIN7716, ISO2230, DIN9088 and other specifications, the basic requirements for the storage, cleaning, and maintenance of rubber products are dried.
Activated oxygen is harmful to most polyurethane elastomers. In the warehouse, there is no machine equipment:
It is not allowed to touch permanent magnetic materials:
Do not use PVC raw materials to pack hydraulic seals. Hydraulic seals of different raw materials cannot be mixed.
Disinfectants, solvents and special tools with sharp edges are not applicable. Moreover, the cleaned hydraulic seals should be dried at room temperature, not close to the heat source.
The hardness of the material is a decisive criterion for the functionality of a seal. Among other things, O o ring suppliers are characterized by the fact that they deform under pressure and thus close gaps. Through which water or other liquids could otherwise penetrate.
Too great an elasticity is not good, because then the gap extrusion threatens.
The concrete part must not deviate from the necessary hardness determined for a seal by more than ± 5 hardness points. This is guaranteed by the laser-controlled hardness test according to IRHD.
Fluctuations in the dimensions of O-rings
Dimensional fluctuations in O-rings are only partly due to manufacturing. One of the possible causes is tool temperature fluctuations during the vulcanization process.
Deviations in the shrinkage behavior of the rubber and other components of the material mixture also cause fluctuations in the dimensions. Similarly, both tool offset and too much or too little deburring influence the line thickness.
Only reliable o ring suppliers cross-section provides precise information about this. This applies to the cord diameter as well as the inner diameter.
As long as O-rings are fully functional, they are hardly perceived as a sealing element. However, this changes in the event of a defect. Because economic damage in the tens or hundreds of millions is usually the result.
Damaged O-rings lead to costly downtimes of machines and vehicles. They can trigger recalls or cause serious environmental damage. That is why, o ring suppliers need to focus a lot on manufacturing these seals.
These examples of direct and indirect consequential damage make it clear what role the quality factor plays in these seals. Whose unit price is only a few cents? Of course, the right choice of material is also one of many prerequisites for a low risk of damage.
But what damage can o-rings occur? It is not always easy to determine the exact cause of a failure. However, there are certain damage patterns that leave characteristic traces. And thus, also offer an opportunity for interpretation.