Previously, we talked a lot about consumer-grade silicone products - phone cases, watch straps, remote control buttons... These are things that everyone comes into contact with on a daily basis.
Let's change the topic today and talk about two "minor players" of silicone in the industrial field - sealing rings and shock absorbers.
They are called "small" because they are usually hidden inside the devices and cannot be seen with the naked eye; they are called "large" because without them, many devices would simply not be able to function properly.
Today, let's take a look at these two seemingly insignificant small accessories and see just how much responsibility they bear.
1. Sealing ring
The core mission of the sealing ring can be summed up in one sentence: It separates what should be separated and retains what should be retained.
In a piece of equipment, there are liquids, gases, dust and moisture. They all stay where they are and cannot move around. The sealing rings' job is to enclose each of them properly.
Where is the sealing ring used?
To tell you the truth, you might not believe it, but silicone gaskets can be found everywhere - from the smart watches on your wrist, to the new energy vehicles on the roads, and even the planes in the sky.
Smartwatch: Between the case and the screen, as well as between the buttons and the body, there are tiny silicone sealing rings. Their function is to prevent water and dust from entering, and to extend the product's lifespan.
New energy vehicles: Between the outer shell and the cover plate of the battery pack, a sealing ring is needed to prevent moisture and dust from entering. The silicone sealing ring can maintain elasticity within the temperature range of -60℃ to 200℃.
Engine and transmission: The engine oil and gear oil must not leak, and they must not be afraid of high temperatures. The silicone rubber sealing ring is oil-resistant and heat-resistant, and it can prevent the leakage of fuel and lubricating oil.
Medical equipment: Pharmaceutical equipment and medical devices have stricter requirements for sealing - they must be leak-proof, free from contamination, and not release harmful substances. Silicone sealing rings are non-toxic and odorless, which perfectly meet these requirements.
Household appliances: In electric water heaters, electric irons, and microwave ovens, silicone sealing rings are also standard equipment.
Why silicon gel?
There are many types of materials for sealing rings, but silicone has several unique advantages:
The temperature range it can withstand is extremely wide. It maintains elasticity from -60℃ to 200℃. It doesn't become hard in winter or melt in summer, which is something many other materials cannot achieve.
It has excellent anti-aging properties. Silicone is resistant to oxidation and ozone, unlike ordinary rubber which cracks after a few years of use.
It has excellent elasticity. Even after being repeatedly compressed and stretched, it can return to its original shape. The sealing ring is designed to be "tight when compressed and elastic when released", and the silicone material does an excellent job in achieving this.
It is non-toxic and odorless. This is why it is the first choice for the medical and food industries.
Excellent insulation performance. High resistivity and high breakdown voltage. Safe to use in electrical appliances.
II. Shock Absorbing Pad
If the sealing ring is the "gatekeeper", then the shock absorber pad is the "buffer".
When the equipment is in operation, it will vibrate - the motor shakes when it rotates, the machine sways when it operates, and the vehicle jolts when it moves. If these vibrations are not dealt with, the consequences will be very serious: precision components will be damaged by the vibration, screws will be loosened by the vibration, the noise will increase, and the equipment's lifespan will shorten.
The function of the shock absorber pad is to "catch" the vibrations and prevent them from being transmitted to the wrong areas.
Where are shock-absorbing pads used?
Aviation and aerospace: The vibration and buffering of instruments, meters, chassis and cabinets all rely on silicone shock-absorbing pads to handle.
Precision instruments: In the high-precision sensors, chip packaging, and the fixed structure of circuit boards, the silicone shock-absorbing pads ensure the stable operation of the equipment.
Industrial machinery: The machinery and equipment in factories usually have silicone shock-absorbing pads at the bottom to reduce vibration transmission and lower noise.
Automobile: The brackets and isolation pads for the engine and transmission help reduce noise and vibration inside the vehicle, thereby enhancing the riding comfort.
High-temperature equipment: industrial furnaces, engine exhaust systems, baking production lines. Ordinary materials cannot withstand high temperatures, but silicone shock pads can.
III. A Fact Often Ignored
The sealing ring and the shock absorber pad have one thing in common: they are usually unnoticed until they break down and then become crucial.
When a piece of equipment is functioning properly, no one would think of those small silicone rings inside. But if the sealing rings become worn out or leak oil, the entire equipment may have to be shut down for maintenance. If the shock absorbers fail or the vibrations increase, the precision components may be damaged.
The more invisible the accessories are, the more important it is to choose the best ones without compromise.
This is why more and more industrial customers are choosing to use silicone for sealing and shock absorption - not because it is cheap, but because it is reliable. - Data shows that by 2030, the market size of sealing and shock absorption products in the Chinese automotive sector alone is expected to reach tens of billions of yuan. - The choice of the market has never been wrong.
What can Hongxiangda do?
The sealing ring and shock absorber pad may seem simple, but they are not easy to make well.
The size must be accurate. A deviation of 0.1 millimeter might cause the seal to fail.
The materials need to be appropriate. Different working conditions require different formulations - ones that are resistant to oil, high-temperature resistant, food-grade, or medical-grade, each with its own specific requirements.
The batch production needs to be stable. For industrial customers, the biggest concern is "This batch works, but the next batch doesn't". The stability of the batches is entirely dependent on the control of the rubber compounding and molding processes.
Hongxiangda has accumulated many years of experience in the field of industrial silicone accessories. Sealing rings, shock-absorbing pads, and shock-proof accessories are all our regular products. From material formulation to mold development, from rubber compounding to molding, we have full control over the entire process. Dimensions, hardness, and temperature resistance grades can all be customized non-standardly according to your working conditions. If you need for export, we can also cooperate in providing international certifications such as SGS and FDA.
If you are manufacturing equipment or products and need reliable sealing or shock absorption solutions, please feel free to come and talk to us at Hongxiangda.