Wiper Seals are a type of mechanical seal commonly used to protect piston rods and pistons in hydraulic and pneumatic equipment. The main function of Wiper Seals is to prevent dust, dirt, and other impurities from entering the interior of the equipment, thereby protecting the sealing performance of the piston rod and piston, and extending the service life of the equipment.
Wiper Seals are typically made of elastic materials such as polyurethane, nitrile rubber, fluororubber, etc. These materials have excellent wear resistance and chemical resistance, and can maintain stable performance in various harsh environments.
Wiper Seals are typically divided into two types: unidirectional and bidirectional. Unidirectional Wiper Seals can only prevent dirt and impurities from entering the device from one direction, while bidirectional Wiper Seals can simultaneously prevent dirt and impurities from entering the device from both directions.
Wiper Seals can also be customized according to different application requirements. For example, for high-speed rotating devices, special Wiper Seals can be used to ensure that they do not generate excessive heat and friction during high-speed rotation. For equipment used in harsh environments, special materials such as corrosion-resistant, high-temperature resistant, and low-temperature resistant Wiper Seals can be used.
In summary, Wiper Seals are in dispensable mechanical seals in hydraulic and pneumatic equipment, and their excellent performance and reliable sealing performance provide important guarantees for the normal operation of the equipment. If you need a Wiper Seals product, you can contact a professional seal manufacturer to customize the appropriate Wiper Seals for your device according to your specific needs.
Wiper Ring,Hydraulic Wiper Seal,Double Lipped Wipers,Dust Seals DG Zhongxingshun Sealing Products Factory , https://www.zxs-seal.com
The infrared emission tube is made up of an infrared light-emitting diode (LED) and a PN junction constructed from materials with high infrared radiation efficiency, such as gallium arsenide. When a forward bias is applied to the PN junction, it emits infrared light, which has a spectral power distribution centered around 830 to 950 nm. LEDs, or Light Emitting Diodes, have a positive temperature coefficient, meaning that as the current increases, so does the temperature. This creates a feedback loop: higher temperature leads to higher current, which in turn increases the temperature further. While the power output of the infrared LED depends on the current, exceeding the maximum rated current can actually reduce the infrared transmission power.
Major manufacturers of infrared emission wafers include companies like Guanglei (ED) and Dingyuan (Tyntek) from Taiwan, as well as foreign suppliers such as Korean and Japanese Dova wafers. Domestically, Shenzhen Orende is also a notable name in this field.
Infrared emission tubes are widely used in various applications, including infrared cameras, remote controls, and surveillance systems. The emission distance of the camera largely depends on the power of the internal chip, but other factors such as the angle of the IR lamp, lens quality, and overall design also play a significant role. Infrared camera designs often match the viewing angle of the IR emitter tube with the lens's field of view. For distances of 20 meters or more, high-quality wafers like Taiwan's 12mil positive type or Japanese equivalents are typically required.
Due to the competitive and sometimes chaotic nature of the market, there is often confusion between the advertised illumination distance and the actual visual range. Many small manufacturers use lower-cost options such as domestic or Taiwanese 10mil or 8mil wafers, or even bulk wafer packages—including defective ones—to assemble infrared lamps for their cameras. For long-distance applications, it's advisable to choose IR-emitting tubes using high-quality, positive-type chips, such as those from Dingyuan or Guanglei, which offer better performance and clearer night vision.
