How to judge the good and bad quality of rubber joints

How to judge the good and bad quality of rubber joints
As a kind of mechanical connection, rubber joints are widely used in chemical industry, petroleum, shipbuilding and other fields. When using rubber joints, we need to judge the good or bad quality of them to ensure their normal operation and safety. Here, we will introduce some methods to judge the quality of rubber joints.
 
1 . Observe the appearance of rubber joints. A good rubber joint should have no bubbles, cracks, burrs and other defects, and the surface should be smooth and flat without obvious unevenness. If the rubber joint has the above defects, then it will affect its sealing performance and service life.
2 . Check the hardness of the rubber joint. The hardness of a rubber joint refers to its compressive capacity, which is usually measured by a hardness tester. A good rubber joint should have a proper hardness, neither too hard nor too soft. If the rubber joint is too hard, it will be difficult to bend and connect during installation, which will easily cause damage; while if the rubber joint is too soft, it will be easy to produce deformation, aging and cracking during use, which will affect its service life and sealing performance.
3 . Check the corrosion resistance of rubber joints. A good rubber joint should have good corrosion resistance and be able to adapt to different media and working conditions. In actual use, we can test the corrosion resistance of rubber joints by injecting different media into them. If the rubber joint cannot adapt to different media and working conditions, then it will cause it to lose its sealing performance and bearing capacity, which will affect the normal operation of equipment and production.
4 . Test the tensile strength of rubber joints. The tensile strength of rubber joints refers to their tensile capacity, which is usually measured by tensile test. A good rubber joint should have a high tensile strength and be able to withstand the tensile and extrusion forces of the equipment during operation. If the tensile strength of the rubber joint is not enough, then it will be prone to fracture, cracking and other problems, which will affect the normal operation of the equipment and production.
5 . Check the installation process of rubber joints. The installation process of rubber joints is directly related to their sealing performance and service life. A good rubber joint should adopt the correct installation process, such as ensuring the torque of connecting bolts, applying proper lubricant, checking whether the flange connection is centered, etc. If a rubber joint does not adopt the correct installation process, it will lead to loosening and leakage during its use, which will affect the normal operation of equipment and production.
 
To sum up, the quality of rubber joints should be judged from the aspects of appearance, hardness, corrosion resistance, tensile strength and installation process. Only by ensuring the quality of rubber joints can we effectively guarantee the normal operation of equipment and production and achieve the goal of safe and efficient production.