What should we pay attention to when making custom-made Silicone rubber O-rings?

Silicone rubber O-rings is a kind of rubber ring as raw material, whose cross section is circular. Because of its cross section is o-ring, it is called Silica Gel o-ring, it has been widely used in machine tools, ships, automobiles, aerospace equipment, metallurgical machinery, chemical machinery, engineering machinery, construction machinery, mining machinery, petroleum machinery, plastic machinery, agricultural machinery, and all kinds of instruments and meters.

In the production process of the silicone rubber O-rings, some knotty problems are sometimes encountered, for example, the silicone rubber O-rings is not joined after forming, the following is by Baker Sealing Company for you to share the cause of silicone o-ring formed after the non-joined and solutions.

Buying a silicone rubber O-rings requires a lot of professional knowledge. Otherwise, you may regret and be disappointed if you buy a lot of low quality products, in this case it is necessary to listen to professional silicone rubber O-rings manufacturers explain to you silicone rubber O-rings procurement needs to pay attention to what issues!

1. Mold temperature too low

Mold temperature is too low will cause silicone rubber O-rings after the formation of the non-sheet problem, the solution is to adjust the curing machine upper and lower mold temperature.

2. Stress

Pressure is too large will appear after the formation of silicone rubber O-rings non-joined, so in the operation of the solution is to increase the right amount of rubber, followed by pressure drop point.

3. Too Little Glue

Glue material is too little, general increase glue material is can be solved, just can have the wrong feeling that add material can make the product size increase. In fact, the size reduction is not entirely by reducing the material to solve, but also by reducing the pressure and increase the mold temperature to reduce the size of the product.

4. Mold removal

You can take the mold to sandblast, equivalent to the mold from the mouth to do a grinding. But it is better not to do so, because this is a set of silicon rubber sealing ring mold, the mold self-disassembly requirements are very high, silicon rubber forming mold in the continuous use of the process would have been worn, if you deliberately go to sandblasting grinding, it's GonNa be hard to tear apart later.

In summary, silicone rubber O-rings is a widely used silica gel products, resulting in the formation of silicone rubber O-rings after the most common non-connecting sheet is caused by thin burrs, secondly, there are other factors in the production process, such as mold temperature, pressure, too little rubber, etc. . Therefore, it is suggested that in the manufacturing process of the silicone rubber O-rings, the problem of the silicone rubber O-rings not being joined after forming is encountered, to solve according to the actual situation, do not blindly, resulting in the final loss of money also has an impact on production efficiency.

All kinds of things, all kinds of products, the most important thing is the life span. The life span of the silicone rubber O-ring varies with the field of application, as well as the aging rate. Silica is one of the main synthetic materials of Silica Gel, it has a complex effect on the aging of o-ring. The strong adsorptive property can adsorb the liquid at high temperature. Siloxane can be broken and degradation reaction should take place, in different areas such as: Thermal Movement (in the case of long-term activity) will enhance the diffusion of Siloxane, thus improving its heat resistance! So the white carbon black to the sealed product influence is quite big, under the different environment uses needs to choose the different raw material!

In addition to the choice of raw materials, the selection of o-rings should pay attention to several characteristics, silicone rubber O-rings need to have good resilience and pull-up, ensure that pull-up rebound to maintain a certain number of times, expansion and mechanical strength, tear resistance, strong, it can be used in all kinds of fields, stable performance guarantees suitable expansion intensity, it is not easy to expand in the medium, the thermal shrinkage effect is small, and the manufacturer of the silicone rubber O-ring is required to ensure the accuracy and size of the product during the processing, die Line closure of small, no burr phenomenon, so the general performance to meet the above conditions of the rubber material can be selected to use.