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4250 Gasket

4250 Gasket

  • Classification:Non-asbestos rubber fiber gasket
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  • Date of issue:2020-11-13
  • Product overview
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Product Name: 4250 Gasket

product description:

Non-asbestos rubber gaskets are made of non-asbestos fibers and oil-resistant rubber as the main raw materials, supplemented by rubber compounding agents and fillers, through mixing and stirring, hot roll forming, and vulcanization. Application field: Very good non-asbestos sealing material, which can maintain good safety under medium and high pressure environments. It is mainly used for sealing oil, water, gas, steam, weak acid and general chemical media. It can also be used for motorcycles, Product specifications for automotive engines:

1500×1540mm 1560×1540mm 4500×1540mm Product thickness: 0.4~6.0mm Each plate can be processed/cut into different types of gaskets and gaskets. The company adheres to the principle of "customer first, quality first", and many companies at home and abroad The enterprise has established a long-term cooperative relationship. Sincerely welcome friends from all walks of life to visit, investigate and negotiate business.

Under the same compaction load and the same medium pressure, the leakage rate decreases as the thickness of the gasket increases. This is because under the same axial load, thick gaskets have greater compression rebound. When the initial sealing conditions are reached, thick gaskets with larger elastic reserves can compensate better than thin gaskets. The relative separation between the sealing surfaces caused by the pressure of the medium keeps a large residual compressive stress on the gasket surface, thereby reducing the leakage rate. But it cannot be said that the thicker the gasket thickness, the better the sealing performance. This is because the thickness of the gasket is different, and the conditions for establishing the initial seal are also different.

NON ASBESTOS GASKET is a sealing material made of aramid and other organic fibers and plant fibers, nitrile rubber, and inorganic minerals at high temperature. It is suitable as a substitute for asbestos gaskets. . Our company can provide 100% asbestos-free gaskets, which not only have high strength, but also have good resilience, and at the same time have super anti-permeability performance. It is a good environmentally friendly material to replace asbestos gaskets under high temperature and pressure.

The main purpose of non-asbestos gaskets: static sealing of industrial pipeline flanges in ships, oil refining, chemical industries, etc.

Due to the friction on the end surface, the surface of the gasket is in a state of three-dimensional compression stress, and the material's anti-deformation ability is relatively large. The influence of the end is small, and its resistance to deformation is also small. Under the same preload, the middle of the gasket is more likely to undergo plastic deformation than the surface of the gasket. At this time, it is more difficult to establish the initial seal. Therefore, when the thickness of the gasket reaches a certain value, the sealing performance will not change or even deteriorate. In addition, the thicker the gasket, the larger the cross-sectional area of penetration leakage and the greater the penetration leakage rate.

The product is a non-asbestos sealing material, which is mainly processed by punching, water cutting, plasma cutting and other methods.

Conventional colors: blue, green, other colors can be customized.

Specifications and dimensions: customized according to customer requirements.

The fit of the octagonal seal ring and the flange groove should be in surface contact. Compared with oval ring washers. Although it is not easy to make close contact with the flange groove, it can be used again, and because the section is straight, it is easy to process. The oval gasket is in contact with the flange groove line, and the sealing performance is good, but the processing accuracy is high, which increases the manufacturing cost, and the oval gasket cannot be reused.

Conventional thickness: 0.4-3.0mm, boards above 3.0mm can be bonded

Non-asbestos gasket performance parameter index: see product model.

Inspection standard: The standard of the plate is the rolling method non-asbestos fiber gasket (JC/T2052-2011)

Remarks: The product can be coated with graphite and anti-sticking agent according to customer requirements, and metal wires can be clamped with a thickness of 0.8mm or more; gasket materials with a thickness greater than 3.0mm are not subject to transverse tensile strength test; gasket materials reinforced by wire mesh are not Do transverse tensile strength and nitrogen leakage rate tests.


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