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Material selection and comprehensive performance of sealing ring

by:ORK      2022-10-24
Our basic requirements for seals are good sealing, long life and low cost. However, in actual use, many sealing rings are relatively easy to damage, causing leakage. So we tried to improve the sealing performance of the sealing ring from all aspects, from the design aspect, from the production process aspect, and from the material aspect. Through research, we found that the material selection of the sealing ring is very important. Under the same working conditions, different materials will have different sealing effects. Therefore, when selecting the material of the sealing ring, we must require the material to meet the sealing performance requirements of the seal. Materials with the following characteristics are suitable sealing materials: 1. The material has good compactness and is not easy to leak; 2. It has appropriate mechanical strength and hardness; 3. It does not soften or decompose at high temperature, and it does not harden or become brittle at low temperature. 4. Good corrosion resistance; 5. Small friction coefficient and good wear resistance; 6. Cheap price and easy to obtain materials. Only when the material of the seal is selected correctly, can the probability of damage to the sealing ring be reduced during use, and the probability of leakage of the sealing ring can also be reduced. In addition, the comprehensive performance of the sealing ring is determined by the service life. Generally speaking, the sealing performance of the sealing ring is determined by its material and processing technology, and the damage of the sealing ring is ultimately caused by the aging of the material. However, the comprehensive sealing performance of the sealing ring is determined by the length of service life. In the domestic seal industry, the seals produced now are generally divided into three types: high-end seals, mid-end seals, and low-end seals. The service life of these three seals varies, with the high end having the longest life, the middle end second, and the low end the worst. And their prices are listed in this order. Most of the sealing materials are made of rubber and are immersed in oil, so the most important factor for sealing failure is the aging of the material over time. The aging of the sealing ring rubber is a complex comprehensive chemical reaction process, and it is impossible to absolutely prevent the occurrence of rubber aging. Only according to these reasons, take appropriate measures to delay the speed of rubber aging, so as to achieve the purpose of prolonging the service life of rubber. The reason why the high-end sealing ring has a long service life is that it adopts a formula that prolongs the aging of the rubber seals. That's why it's expensive. Company website: https://www.orksealing.com/
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