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In this article, we investigate the best materials for low temperature O-ring and other seal applications. For the most part, Rubber Ring Manufacturer already maintain performance in temperatures ranging from -5 to -25 ° C. For this reason we will only consider low temperature applications below -25 ° C. If your seal.
When designing an O-ring for a particular application, it is important to consider the environmental factors it may encounter. Therefore, the environment plays a decisive role in the functionality and life of the O-ring. If the o-ring exposes to temperature or weather outside the specified range, it will likely fail shortly.
Extreme temperatures affect each rubber material in a different way. Some rubber compounds are heat-resistant, while others remain flexible in the cold. To prevent your o-ring from warping or malfunctioning at extreme temperatures, there are a few things to keep in mind.
Failure of the O-ring at low temperatures
Without proper selection Rubber Ring Manufacturer, O-rings exposed to extreme cold can:
Generally, shrinkage and reduction in compression set can lead to severe leakage. Once a leak path comes out, it will remain in the seal indefinitely.
To prevent the O-ring from being exposed to extreme cold, designing the seal with compression set is the first step. Because compression set is often reduces at low temperatures. Similarly, Rubber Ring Manufacturer designs the seal design with constant pressure on the o-ring. Hence, it is also called compression. Applying a design compression of 30% or more can prevent seal ring failure at low temperatures.
Furthermore, it is also important to choose the right material for extreme low temperatures.
Failure of the O-ring at high temperatures
Strong heat is popular for physically and chemically degrade rubber seals over time. It causes permanent damage to the O-ring. In addition, high temperatures can damage rubber seals, causing them to:
Such changes can have a lasting effect on the O-ring, causing irreversible effects in the structure of the seal, which can ultimately lead to failure.
To prevent the high temperature from adversely affecting the O-ring, select an O-ring material with low compression set. The lower the compression set, the better the material will withstand permanent deformation. Also, check the seal design. It is to make sure the Rubber Ring Manufacturer has not over compressed the seal. Due to friction, the seal face will generate more heat. It may be excessive for your seal.
A car air conditioner consists of several separate units distributed over the car body. They are interconnected by pipelines. And the tightness of the system at the joints of the pipes is ensured by O-rings of different sizes.
Rings for auto air conditioners serve for a relatively long time. But when repairing a highway or individual units, it is imperative that we should use new O-rings.
Despite the fact that the refrigerant in the car air conditioner circulates in a closed system, small natural gas leaks are inevitable. Last but not least, they are due to the gradual aging and cracking of the O-rings.
Freon escapes through these micro cracks, as a result of which the performance of the car air conditioner gradually decreases. To restore the unit’s operability, it is necessary to purchase special sealing rings for car air conditioners. Similarly, it is important to install them instead of old ones. Because old have become unusable, and then fill the system with refrigerant.
If Rubber Ring Manufacturer does not use lubricants, it will damage seal friction. To prevent this from happening, it is necessary to start the climatic unit once a month for 5-10 minutes. In this process ceiling parts will get enough lubricant.
Features of rings for car air conditioners
Modern rings for car air conditioning come with artificial materials of a special composition. It is not only resistant to lubricants, but also to refrigerants R134 and R12. Their cost is low. It makes it possible to equate the rings with consumables, the replacement of which is important for any repair operations. And with frequent refueling of the system, it is necessary to change the spools in the refueling ports.
As a rule, Rubber Ring Manufacturer sells seals in special sets of rings for car air conditioners.
Sealing rubber rings are resistant to aggressive liquid and gaseous media, the operating temperature range ranges from -60 … + 300 ° С. For example, a silicone model has an operating temperature of -60 … + 250 ° C, for FPM – -60 … + 250 ° C. Stability and temperature range, as well as the nominal pressure in movable and fixed joints, depend on the grade of material used in production.
We are a manufacturer of high-quality large diameter O-rings; therefore we can offer each client:
It is very important to contact a reliable Rubber Ring Manufacturer. It will bring to you very encouraging results.