The specifications of commonly used seals are mainly made of rubber. as Dong Sheng Seal said, NR rubber (native rubber) is a NR latex collected from rubber trees, the collected latex is solidified and dried to form a solid body. NR rubber is a natural polymer compound mainly composed of polyseem. its rubber hydrocarbon (polyseem) content is more than 90%, and it also contains a small amount of protein, fatty acids, sugar and ash.
First, the physical properties of NR rubber seals have high elastic properties at normal temperature, slightly plastic, with very good mechanical strength and small lag loss, the heat is low during multiple deformation, so its bending resistance is also very good, and because it is non-polar rubber, the electrical insulation performance is good.
Two, rubber, plastic, fiber and NR rubber (native rubber) seal material used for the three synthetic seals, with high scalability and good elasticity. The seal material is characterized by a very small elastic modulus and a high elongation.
Third, secondly, it has a good resistance to air permeability and resistance to various chemical media and electrical insulation.Some special synthetic rubber seals have better oil resistance and temperature resistance, and can resist the swelling of fat oil, lubricating oil, hydraulic oil, fuel oil and solvent oil.
4. the rubber seal is also resistant to various bending and bending deformation, because the lag loss is small.The third characteristic of rubber is that it can be used, blended and composite with a variety of materials, which is modified to achieve good comprehensive performance.
If you have plenty of time, you can learn how to take care of custom rubber seals. Also, invest in the right custom rubber seals rubber seal.
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