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Ningbo Techo Sealing Gasket Co.,Ltd

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Non-Asbestos Rubber Sheet High Tensile Strength, Good Heat Resistance
- Jul 13, 2017 -

Non-Asbestos Rubber Sheet is mainly used in high temperature and high pressure water, saturated steam, superheated steam, gas, inert gas and other media equipment pipe flange flange sealing material. So the performance of Non-Asbestos Rubber Sheet to pay attention to determine its performance is mainly the quality of asbestos fiber. So asbestos fibers require high tensile strength, good heat resistance, a certain length, fiber flexible, flexible. General high pressure Non-Asbestos Rubber Sheet and more than 400 oil Non-Asbestos Rubber Sheet are used 2,3 grade asbestos fiber. At present, due to the use of Non-Asbestos Rubber Sheet restrictions reasons, more use Ishikawa non-Non-Asbestos Rubber Sheet instead of the original asbestos board

Non-Asbestos Rubber Sheet sealing products Asbestos is rich in resources, asbestos by mechanical or chemical treatment can be released, fully released asbestos fiber, high tensile strength surface area, adsorption performance is good, can not burn, heat resistance, The maximum safe use of the temperature of 500 ~ 550 ℃, the temperature range can meet the needs of industrial workers, and asbestos cheap, the disadvantage is that asbestos dust on environmental pollution, harmful to the human body, pay attention to environmental protection. Asbestos rubber seal products can be divided into the following three categories: ① gasket - the use of pipe flanges and container flanges on the plate and sheet seal products; ② washers - the use of pumps, valves, Molding, sealing products; ③ packing - the use of pumps, valves, kettle on the rope and velvet-like sealing products

Non-Asbestos Rubber Sheet is mainly used in high temperature and high pressure water, saturated steam, superheated steam, gas, inert gas and other media equipment pipe flange flange sealing material. So the performance of Non-Asbestos Rubber Sheet to pay attention to determine its performance is mainly the quality of asbestos fiber. So asbestos fibers require high tensile strength, good heat resistance, a certain length, fiber flexible, flexible. General high pressure Non-Asbestos Rubber Sheet and more than 400 oil Non-Asbestos Rubber Sheet are used 2,3 grade asbestos fiber. At present, due to the use of Non-Asbestos Rubber Sheet restrictions, more use of Ishikawa non-Non-Asbestos Rubber Sheet instead of the original asbestos board

Non-Asbestos Rubber Sheet As the name suggests is made of asbestos, rubber, with a mixture of rolling, it is a variety of contact surface with the sealing material. With low hardness, high elasticity, can be in the higher pressure, the temperature of -35 ~ +60 º C in the air work. So Non-Asbestos Rubber Sheet under different pressures will have different performance. The same time as the above-

Non-Asbestos Rubber Sheet due to ingredients, technology, performance and use different, can be divided into XB450, XB350 and XB200 three grades, customary, respectively, known as high pressure Non-Asbestos Rubber Sheet (high pressure plate), medium pressure Non-Asbestos Rubber Sheet (medium plate) and low pressure Non-Asbestos Rubber Sheet (low pressure plate). XB450 Non-Asbestos Rubber Sheet can be used as a seal of high temperature and high pressure (temperature 450 ℃, pressure 6.0MPa) of water, saturated steam, superheated steam, air, gas and other inert gases. And can be used to seal the normal temperature and pressure of gasoline, kerosene, lubricants and alcohol; XB350 Non-Asbestos Rubber Sheet can be used for temperature 350 ℃, pressure below 4.0MPa sealed water pipes and steam pipes; XB200 Non-Asbestos Rubber Sheet can be used to seal the general plumbing equipment And low pressure water pipes and steam pipes. XB450, XB350, XB200 Asbestos sheet single sheet forming thickness is generally not more than 3mm, more than 3mm Non-Asbestos Rubber Sheet allows the fit. The thickness of 1.5 and 1.5mm below the XB450, XB350, XB200 Non-Asbestos Rubber Sheet are used package, the thickness of 1.5mm or more are used flat package. Both the package and the paperback, the outer layer of packaging is wrapped, not exposed yesterday. The main technical conditions and test methods are as follows:

1) The surface color XB450 is purple; XB350 is red; XB200 is black.

2) width and length of various Non-Asbestos Rubber Sheet size according to the molding machine equipment to determine the conditions. The maximum width of domestic products is 2000mm; generally 1300mm × 4000mm. The allowable deviation of width and length is ± 5%.

Non-Asbestos Rubber Sheet is made of asbestos, rubber and packing. According to its formula, process, performance and use of different, mainly high pressure Non-Asbestos Rubber Sheet, medium and low pressure Non-Asbestos Rubber Sheet and oil Non-Asbestos Rubber Sheet, acid and other categories. Can be used as a pipe flange, high pressure vessel flange and a variety of mechanical connection surface with the sealing material. When used in general according to the requirements into a variety of shapes, size of the gasket. Uses: Suitable for high temperature and high pressure water, saturated steam, superheated steam, gas, inert gas and other equipment, pipe fittings flange connection sealing gasket material. Asbestos made of Non-Asbestos Rubber Sheet is made of chrysotile asbestos, blue asbestos (crocidolite). Chrysanthemum is a serpentine asbestos, its main ingredient is about 13% of the crystal water magnesium silicate, it is heat, alkali resistance, high tensile strength, acid resistance is poor, most Non-Asbestos Rubber Sheet are Produced by it. Blue asbestos is amphibole asbestos, the main component is containing 2.5 ~ 3.5% of the crystal water of silicate, magnesium oxide composition is very small, iron oxide accounted for about 18 ~ 24%. Blue asbestos is not only good heat resistance, and acid resistance is also good, so much used to make acid Non-Asbestos Rubber Sheet.

Asbestos fiber quality of the impact of Non-Asbestos Rubber Sheet performance, it is required asbestos fiber tensile strength, heat resistance, and a certain length, the fiber is easy to flex, flexible. General high pressure Non-Asbestos Rubber Sheet and more than 400 oil Non-Asbestos Rubber Sheet are used 2,3 grade asbestos fiber. At present, due to the use of Non-Asbestos Rubber Sheet restrictions, more use of Ishikawa non-Non-Asbestos Rubber Sheet instead of the original asbestos board.