Sure, a thiakol rubber O-ring groove size import
Taiwan Asahi Meike seal (XOK), professional and technical skills. If you encounter in the actual work on the slotting aspect of the problem, you can communicate directly with us. Here are a brief introduction about the relevant content of slotting.
To determine the O type ring groove size is the main content in the design of the seal; when the O-ring size is selected, the amount of compression, stretching and working conditions are decided by a trench, it is no exaggeration to say that the design and selection of groove on the seal sealing performance and service life of the impact is very large. At present, the most commonly used groove shape is rectangular. For example, has been selected the O ring diameter of 3.53mm, then how to choose the groove size? First of all, we want to determine the seal form is static or dynamic. If it is static, the proposed slot width is 4.5 mm, the groove depth is 2.7mm. If it is dynamic, and liquid as the medium, the proposed slot width of 4.2 mm, slot depth of 3.1mm; if it is to gas as the medium, the proposed slot width of 4.2 mm, slot depth of 3.25mm. So, the above size selected is not the be accomplished? Certainly not. There are a little more important, is in motion to prevent damage and O-ring in the slot a chamfer, above the corresponding chamfer is recommended for 1.8.
Two, the import of thiakol rubber O-ring tension and compression
Stretching and compression are two basic forms of the O type ring installed in the groove. The compression force is determined by the initial deformation degree of the O ring and the hardness of the sealing material. Taiwan Asahi seal (XOK), 100% grams of imported rubber material, from the fundamental guarantee for the various parameters of sealing products, including good tensile and compression index. Rubber ring as the "inner circle", the maximum circumference of the compression is 1%. If it exceeds this degree, it will affect the working life of the rubber ring. As the "outer circle seal", its inner diameter should be greater than the outer diameter of the groove, the maximum elongation should be 3% (diameter > 50mm) or 5%. If the pressure comes from inside, the outer diameter of the sealing ring should be in contact with the outer diameter of the groove (its circumference is less than 1%). If the pressure from the outside, the rubber ring diameter should be in contact with the inside diameter of the trench, the maximum allowable tensile 3%.
Three, how to choose the O-ring
O ring is standard, currently on the market can offer businesses is very much, but the product quality is uneven, can really meet their needs, cost-effective but not many. Select the O-ring, suggestions from the following aspects:
Clear the use of the environment: the sealing state is static or dynamic; long term use temperature, extreme temperature; whether to bear high pressure, how much pressure, which corresponds to the choice of the sealing ring is of medium hardness; gas or liquid medium.
In addition to the basic content above, seal material is a very important aspect in the choice of o-ring. Because the material has a direct impact on the performance requirements of the product.
Whether the sealing property, resilience and compressibility of 1/ material is good;
2/ price is moderate, is easy to shape;
3/ anti-aging ability is strong, life is long;
4/ wear resistance is good, the friction is small;
5/ in a specific medium (acid, alkali, water, steam, oil, etc.) whether to maintain the volume does not expand or expand smaller;
6/ does not appear to soften or break down the phenomenon of high temperature, low temperature does not harden or brittle crack