Elongation of rubber O-ring

In industrial production and daily life, rubber seals play a very important role. Among them, rubber O-ring has been widely used because of its simple structure and stable performance. This paper will focus on the tensile value of rubber O-ring, including its basic principle, measurement method and application field.


First, the basic principle of rubber O-ring tension


The tensile amount of rubber O-ring refers to the amount of elongation generated when it is subjected to tensile action. Its basic principle involves two factors: elastic modulus and tensile strength.


Elastic modulus is the ability of a material to resist deformation, reflecting the relative relationship between elasticity and plasticity of a material. The greater the elastic modulus of the rubber O-ring, the greater the force required to produce the same deformation under the action of external forces.


Tensile strength refers to the maximum tensile force that a material can withstand during the stretching process. For rubber O-ring, the higher the tensile strength, it is not easy to break during the stretching process, and can withstand a greater amount of stretching.


Second, rubber O-ring tensile measurement method


The commonly used methods to measure the tensile value of rubber O-ring are tensile machine test and digital image processing.


1. Tensile machine test


Tensile machine test is a test method commonly used in laboratory, which is suitable for measuring the tensile strength and elongation of rubber O-ring. Through the tension machine, the tensile force can be gradually increased, while recording the elongation of the rubber O-ring, so as to obtain the tensile curve. The elastic modulus and tensile strength of rubber O-ring can be further analyzed according to the curve.


2. Digital image processing


Digital image processing is a non-contact measurement method, which is suitable for measuring the deformation of rubber O-ring after tensile action. By taking pictures of rubber O-ring before and after stretching, and using image processing software for comparative analysis, the stretching amount can be obtained. This method has the advantages of simple operation, fast and accurate, but it needs some equipment support.


Three, rubber O-ring tensile application field


The tensile amount of rubber O-ring has a wide range of applications in various fields, such as mechanical seals, hydraulic seals and so on.


In mechanical seals, rubber O-rings are often used as seals for moving and static rings. In order to ensure the sealing effect, the tensile amount needs to be strictly controlled. The proper drawing amount can improve the sealing performance and prevent media leakage.


In hydraulic seals, rubber O-rings can be used to seal hydraulic cylinder pistons. In the hydraulic system, the piston needs to reciprocate under the action of pressure, and the tensile amount of the rubber O-ring will affect its sealing effect. The proper amount of tension can enhance the sealing performance of the hydraulic cylinder and prevent the leakage of hydraulic oil.


Iv. Conclusion


The tensile amount of rubber O-ring is one of the important factors affecting its performance. In practical application, we need to fully consider its elastic modulus, tensile strength and other factors, and adopt appropriate measurement methods to accurately control its tensile amount. Only in this way can we give full play to the advantages of rubber O-ring seals and improve the performance of mechanical or hydraulic systems.


In short, understanding the tensile amount of rubber O-ring is of great significance for optimizing its performance and ensuring the normal operation of equipment. It is hoped that this article can help you deeply understand the concept and function of rubber O-ring tension, and provide useful reference for practical application.


If you have other questions, please visit the Forever Seals official website for consultation www.frseals.com


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