Fluorosilicone rubber is a kind of hot-vulcanized special silicone rubber. Because its matrix polymer is silicone rubber containing trifluoropropyl group, it combines the advantages of silicone rubber and fluorine rubber: that is, it has good low temperature performance and insulation of silicone rubber. Performance, high temperature performance, easy processing and weather resistance, but also has low permeability, flame retardancy, good physical and mechanical properties and chemical stability similar to fluororubber, such as solvent resistance, oil resistance, oil and gas resistance, and suitable for various It is widely used in the fields of aviation industry, petroleum industry, automobile industry, chemical industry, etc. because of the harsh high and low temperature resistance fuel and lubricant resistance occasions. As a kind of sealing protection products, fluorosilicone rubber is suitable for use in aerospace, automobile, electromechanical, electronic, machinery and construction fields. It can be used in kerosene and steam at -55℃～220℃ and open flame at 150℃. And continue to use in harsh environments such as stress, temperature resistance, oil resistance, and ozone resistance when the strength is greater than 100KG. Below, the characteristics of our fluorosilicone rubber are introduced in detail.Fluorosilicone rubber is a kind of hot-vulcanized special silicone rubber. Because its matrix polymer is silicone rubber containing trifluoropropyl group, it combines the advantages of silicone rubber and fluorine rubber: that is, it has good low temperature performance and insulation of silicone rubber. Performance, high temperature performance, easy processing and weather resistance, but also has low permeability, flame retardancy, good physical and mechanical properties and chemical stability similar to fluororubber, such as solvent resistance, oil resistance, oil and gas resistance, and suitable for various It is widely used in the fields of aviation industry, petroleum industry, automobile industry, chemical industry, etc. because of the harsh high and low temperature resistance fuel and lubricant resistance occasions. As a kind of sealing protection products, fluorosilicone rubber is suitable for use in aerospace, automobile, electromechanical, electronic, machinery and construction fields. It can be used in kerosene and steam at -55℃～220℃ and open flame at 150℃. And continue to use in harsh environments such as stress, temperature resistance, oil resistance, and ozone resistance when the strength is greater than 100KG. Below, the characteristics of our fluorosilicone rubber are introduced in detail. Important characteristics of fluorosilicone rubber 1. Weather resistance, oil resistance, solvent resistance, and chemical resistance The main chain of fluorosilicone rubber is a Si-O bond structure, which is a saturated chain, so it has excellent air aging resistance. Its rubber test piece can still maintain good elasticity after five years of outdoor exposure test; after up to 10 years, Under ultraviolet light and harsh weather conditions, its physical properties have only minor changes. The tensile strength and elongation at break of samples placed in different locations have decreased by less than 25%. Compared with methyl vinyl silicone rubber, fluorosilicone rubber has excellent oil resistance, solvent resistance, and chemical resistance; even when compared with fluororubber, it has good oil and solvent resistance. After immersing in the same medium, temperature and time, it shows excellent durability. Fluorosilicone rubber has better resistance to methanol-containing gasoline. Even in a gasoline/methanol mixture, the hardness, tensile strength, and volume change of the vulcanized rubber are very small. After a long-term immersion test for 500 hours, the physical properties are also almost no change at all. 2. Heat resistance Compared with fluororubber, fluorosilicone rubber has excellent heat aging resistance, especially the retention rate of physical properties at high temperature. Compared with silicone rubber, fluorosilicone rubber reduces the heat resistance of fluorosilicone rubber to a certain extent due to the presence of trifluoropropyl group. The reason is that trifluoropropyl group is easily thermally decomposed, and the decomposition produces highly acidic compounds that accelerate fluorine. Thermal aging reaction of silicone rubber. The high temperature decomposition of fluorosilicone rubber is the same as that of silicone rubber, namely: side chain oxidation, main chain rupture, side chain thermal decomposition and various compound reactions. Since the decomposition products can also cause the main chain to break, the heat resistance is usually worse than that of silicone rubber, and it has begun to oxidize and age at a temperature of 200°C. Temperature has greater influence on fluorosilicone rubber than silicone rubber, but less than fluoroelastomer. Foreign countries have also studied the service life of fluorosilicone rubber at 150℃×2000h, 175℃×5000h, and 200℃×4000h. The result is second only to methyl vinyl silicone rubber. 3. Low temperature performance Like ordinary silicone rubber, fluorosilicone rubber has good low temperature performance. Since fluorosilicone rubber is a linear polymer composed of soft Si-O as the main chain, its low temperature characteristics are better than those of fluoroelastomers with C-C as the main chain. First of all, the molecular backbone of fluorosilicone rubber is relatively flexible, giving it excellent cold resistance. Secondly, the molecular chain of fluorosilicone rubber is in a helical configuration. The flexibility of the molecular chain is greater than that of the CC bond or the Si-C bond. The interaction force between the molecular chains is weak. These structural features make it soft and elastic. When it changes, the intermolecular force changes very little, so its various properties, especially elasticity, change little, making it have low-temperature performance that other rubbers can’t match. Third, the presence of trifluoropropyl substituted methyl can destroy the regularity of the polydimethylsiloxane molecular chain, reduce the crystallization temperature and degree of crystallization of the polymer, and make fluorosilicone rubber have a better low temperature than silicone rubber Sex. Therefore, fluorosilicone rubber still has elasticity at a low temperature of -60°C to -70°C, and can be used for a long time at -60°C. 4. Electrical insulation and radiation resistance The electrical performance of fluorosilicone rubber is similar to that of ordinary silicone rubber. Except for high frequency and high voltage electrical environment, its electrical insulation performance can reach the use level. The electrical insulation performance changes little under severe conditions such as high temperature, low temperature, humidity, oil, solvent, chemicals, ozone, etc. The radiation resistance of fluorosilicone rubber is not outstanding, but the radiation aging resistance is better than that of methyl vinyl silicone rubber. 5. Physical and mechanical properties Like ordinary silicone rubber, fluorosilicone rubber has relatively low mechanical strength (especially tear strength). Our company can customize and process fluorine-silicon special-shaped parts, O-rings, gaskets, gaskets, oil seals, etc. according to requirements. After customer experiments, the effect is excellent. Welcome customers in related industries to exchange and consult, and request samples for testing.

O-ring is a sealing element with a circular cross-section. In the mid-nineteenth century, some people used O-rings made of cast iron as the seals for steam engine cylinders. Later, natural rubber was used for faucets. With the development of rubber production, O-rings are currently made of synthetic rubber. Practice has proved that the sealing performance of the O-ring is very good, so it is used in equipment from airplanes to general hydraulic and pneumatic equipment. In this page, we will introduce the function of O ring in did

What is the gap between the oil seal and the mechanical seal? The key function of the sealing ring is to protect the grease, so that the components that must be lubricated in the transmission components and the mechanical energy components protect each other. The mechanical seal refers to the device that processes the sealing relationship between the driving force cardiomyocytes and the arc. The skeleton oil seal is a category typical of the seal ring, which means a commodity. Usually, when talking about the seal ring, these "heavy-weight" skeleton oil seals are always thought of. In short, the skeleton diagram refers to the key construction of the supporting points and determination of the sealing ring, which can improve the actual sealing effect of the sealing ring, so that the sealing ring can maintain the appearance and excellent supporting force. According to the structure of the seal ring, the skeleton oil seal can be divided into a single-lip skeleton oil seal and a lip skeleton oil seal.

Why Wonepart seal there are different types of Seal application in different area?Why Wonepart seal there are different types of Seal application in different area? Leakage is one of the common failures of mechanical equipment. There are two main reasons for leakage: one is the result of mechanical processing, the surface of mechanical products must have various defects and shape and size deviations, therefore, gaps will inevitably occur at the joints of mechanical parts; the other is sealing two If there is a pressure difference on the side, the working medium will leak through the gap. Reducing or eliminating gaps is the main way to prevent leakage. The role of the seal is to seal the gap between the joint surfaces, isolate or cut off the leakage channel, increase the resistance in the leakage channel, or add a small working element in the channel, which will cause pressure on the leakage and partially offset the pressure difference that caused the leakage. Or fully balanced to prevent leakage. Sealing can be divided into two categories: static sealing between relatively static joint surfaces and dynamic sealing between relatively moving joint surfaces. Static seal usually refers to the seal between two static surfaces. There are three main categories of static sealing: gasket sealing, sealant sealing and direct contact sealing. Dynamic seal refers to the seal between relative moving parts in a machine (or equipment). 1 Packing seal Packing seals are mainly used for the dynamic sealing of the moving parts of process machines and equipment in the machinery industry, such as centrifugal pumps, compressors, vacuum pumps, mixers, reactor shaft seals and reciprocating pumps, plungers or piston rods of reciprocating compressors, And to make the seal between the valve stem of the linear and spiral motion valve and the fixed body. The basic form of stuffing box is: (1) Asbestos packing: Both temperature resistance and corrosion resistance are very good, but when used alone, the sealing effect is not good, so it is always impregnated or added with other materials. Oil-impregnated asbestos packing: There are two basic structural forms, one is twisted and the other is braided. It can be divided into round and square. (2) Teflon braided packing: The PTFE tape is braided into packing, which has excellent corrosion resistance and can be used in cryogenic media. (3) Rubber O-ring: In the low pressure state, the sealing effect is good. The use temperature is restricted, such as natural rubber can only be used at 60°C. For O ring you could find details on our web http://www.wonepart.com/product/o-ring, you could find the part that you want. (4) Plastic molding filler: Generally made into three-piece type, but also can be made into other shapes. The plastics used are mostly polytetrafluoroethylene, and nylon 66 and nylon 1010 are also used. (5) Soft packing seal Soft fillers, also known as mud-like fillers, are advanced "packings" made from a new generation of high-performance synthetic fibers with special barrier agents and lubricants. The soft packing has any size and shape, and it is easy to install. It can be injected directly through a special high-pressure gun. It does not need to be pre-cut like a traditional packing, and it can be applied to any size of the packing cavity.

What is UN piston seal? In fact, UN seal refers to the universal sealing technology between piston and piston rod, commonly known as UN seal or piston seal. And because the sealing material generally used is polyurethane rubber products, it is also called polyurethane seal. 1. The role of UN polyurethane seal and engineering working temperature Because the UN piston seal is made of polyurethane rubber, its polyurethane hardness is generally between 90. Polyurethane seals have the same size and cross-section, and the height of the inner and outer sealing lips are the same. Its sealing function is to prevent the intrusion of particulate dust, dirt and foreign objects. It is a universal shaft hole sealing ring series. The engineering environment temperature is between -40℃~+100℃. 2. The advantages of UN polyurethane seals and the reasons for their widespread use The advantages of the UN seal of the piston polyurethane are the remarkable extrusion impact resistance, the resistance to compression and the good wear resistance in the working state, and it is very suitable for operation under harsh engineering environmental conditions. Why are UN piston seals widely used? Because of its advantages, it can be used to prevent dust from heavy-duty German mechanical seal box industrial hydraulic seals (such as various types of hydraulic cylinders, cylinders, piston rods or piston seals), and has a good sealing effect.

What kind of seal or hydraulic seal are you looking for construction machine excavators or wheel loaders? The choice of sealing ring material is of great significance to its sealing performance and service life. The performance of the material directly affects the performance of the sealing ring. What kind of seal material are you searching to fit your machines or configuration, there are NBR, HNBR, SIL, FLS, FLS, EPDM, CR, IIR, ACM, PU, Metal Rubber and so on. Material application 1. NBR nitrile rubber sealing ring: suitable for use in petroleum hydraulic oil, glycol hydraulic oil, diester lubricating oil, gasoline, water, silicone grease, silicone oil and other media. It is the most versatile and lowest cost rubber seal. Not suitable for polar solvents, such as ketones, ozone, nitro hydrocarbons, MEK and chloroform. The general operating temperature range is -40~120 ℃. There are more than 320 varieties and brands of nitrile rubber. It is divided according to its combined acrylonitrile amount, polymerization temperature, Mooney viscosity, physical form, processing performance and antioxidant type. A. Classified according to the amount of combined acrylonitrile. The amount of combined acrylic rubber of commercial nitrile rubber is in the range of 18-50%, and the main brand number is 28-40%, and it is divided into 5 grades in turn. 1) Very high nitrile grade with 42% combined acrylonitrile content; 2) High nitrile grade with 36-41% combined acrylonitrile content; 3) Medium and high nitrile grade with 31-35% combined acrylonitrile; 4) Medium nitrile grade with 25-30% combined acrylonitrile; 5) Low nitrile grade with a combined acrylonitrile content of 24% or less; B. According to the polymerization temperature, there are two types of high-temperature polymerization nitrile rubber and low-temperature polymerization nitrile rubber, which are mainly produced by low-temperature polymerization. Zhuochuang WiKi Tourists C. According to the Mooney viscosity classification, the Mooney viscosity (ML100℃1+4) of commercial nitrile rubber is 20-140, and the main varieties and brands are 25-100. D. According to the physical type, there are several forms of nitrile rubber in block, flake, powder or granular and liquid form. E. According to processing and performance classification, nitrile rubber has general-purpose, easy-to-process, easy-to-dissolve, partially cross-linked, non-corrosive to metals, additive type, carboxylated nitrile rubber, polyvinyl chloride modified type, and Resin combined type is easy to accumulate stable nitrile rubber and other varieties. F. According to the classification of antioxidants, there are pollution type, micro pollution type and non-polluting nitrile rubber. Sign meaning of variety The meanings of the symbols of the nitrile rubber products in various countries are briefly described as follows. a. The product brands of my country's Lanzhou Chemical Company and Cheng Rubber Factory are composed of DCJ and the suffix three-circle figures. The first two figures indicate the amount of combined acrylonitrile. According to the national standard GB5577-85, it has adopted four digits consisting of NBR and a suffix. The first two digits indicate the low limit of combined acrylonitrile, and the fourth digit indicates the ten digits of the low limit of Mooney viscosity. For example, NBR1704 means a pollution-type high temperature polymerized nitrile rubber with a combined acrylonitrile content of 17-20% and a Mooney viscosity of 40-65. b. The product brand of American Goodrich Chemical Company consists of ycar and a four-digit suffix. The first two digits indicate the form of nitrile rubber: 10 means block, 13 means liquid, and 14 means powder. The third digit indicates the performance of nitrile rubber: 0 means standard type, 1 means easy processing type, 3 means easy dissolving type, 4 means low temperature polymerization. The fourth digit indicates the amount of combined acrylonitrile: 1 indicates high nitrile grade, 2 indicates medium high nitrile grade, 3 indicates medium nitrile grade, 4 indicates low nitrile grade, and the second two digits 72 indicate carboxyl nitrile rubber. c. The product brand of Polysar in Canada is Nrynac, and the suffix has two combinations of three digits and four digits i. The former is divided into two series of 800 and 820, among which the 100 and 200 series are carboxylated nitrile rubber; when the latter is combined, the first two digits indicate the amount of combined acrylonitrile, and the last two digits indicate the Mooney viscosity. d. The product brand of Japanese company ゼォン is Nipol, and there are two combinations of DN suffix three digits and N suffix two digits in the product brand. The first digit of the three-digit number of the DN suffix indicates the amount of bound acrylonitrile, 0, 1, 2, 3, and 4 indicate that the amount of bound acrylonitrile is very high, high, medium-high, medium and low, 5 grades, 5 Indicates polyvinyl chloride modified type, 6 indicates liquid nitrile rubber, and 12 indicates nitrile rubber copolymerized with EDM. The first number in the two digits of the N suffix is 2-4, which means the amount of acrylonitrile bound. The larger the number, the lower the content. The second number 0 means standard high temperature polymerization, 1 means standard low temperature polymerization, and 3 means low Viscosity is not corrosive to metals, 4 means carboxyl nitrile rubber, 2 or J attached to the second digit means nitrile rubber with good teeth and processing properties.

Floating seal from wonepart are commonly used in bulldozer and wheel loader construction machines Floating oil seal is a common name of floating seal, which is a kind of mechanical seal in dynamic seal. It has super sealing performance under harsh working environments such as coal powder, sand, water vapor, etc. It is a compact machine Sealed, mainly used in low speed and heavy load occasions. It has the advantages of automatic compensation after wear, end wear, reliable work, simple structure, etc. It is widely used in coal mine machinery. Such as bulldozer walking mechanism, scraper conveyor head (tail) sprocket assembly, roadheader loading mechanism and cantilever section, continuous shearer left and right cutting drum and reducer, etc. Introduction The planetary reducer with a floating oil seal on the walking part of the construction machinery performs dynamic sealing on the end face of the component. Due to its high reliability, it is also used as a dynamic seal for the output shaft of the bucket wheel of the dredger. This type of seal is a mechanical seal, which is generally composed of a floating ring of iron alloy material and a supporting O-ring seal of nitrile rubber. Floating rings are used in pairs, one rotates with the rotating parts and one is relatively stationary, which is very different from the oil seal ring.

UN piston oil seal UN-piston and piston rod universal seal. Generally polyurethane products, product hardness: 90 degrees + -2 degrees, working temperature: -40 degrees-100 degrees, working medium: hydraulic oil. Working pressure: less than or equal to 32Mpa. The advantages of UN oil seal: good wear resistance, resistance to extrusion and impact, small compression deformation, most suitable for harsh working conditions and easy to install. The UN oil seal is the most widely used oil seal in hydraulic cylinders. Its main function is to prevent the entry of dust, dirt, grit, and metal shavings. It is mainly used for the sealing and dustproof of heavy-duty walking machinery or industrial hydraulic cylinders and cylinders, hoists, axial movement rods of guide rods, and piston rods (draw rods) and pistons (one-way piston seals) under static pressure. Whether it is used for pistons or piston rods, it can obtain a good sealing effect.

Are you ready to return to work and restart its economy after COVID19 fade away? Coronavirus:China tries to go back to work to heal illness-inflicted economy Wonepart.com are ready to delivery goods after COVID19 fade away. As a responsible big country, China strictly promotes the resumption of production and production while strictly preventing and controlling the epidemic. After witnessing the progress of China's resumption of production and production, many mainstream British and American media said that the situation is encouraging and encouraging. The international community believes that China's resumption of production and production is very timely, which not only benefits its own economic development, but also makes a significant contribution to the world economy. We wonepart.com are ready to supply all kinds of construction machine spare parts for you to restart economy.

PTFE gasket or back up ring The full name of PTFE gasket or back up ring is polytetrafluoroethylene gasket. It is also called PTFE gasket or Teflon gasket in foreign countries. It is a flat gasket made of PTFE rod, tube and plate by mechanical turning or cutting , V-shaped gasket, piston ring, ball valve gasket, etc. In fluid machinery (such as pumps, compressors, mixing tanks, centrifuges, etc.), the parts with the most severe operating conditions are considered to be PTFE gaskets or back up ring.With good characteristics of corrosion resistance, aging resistance and non-conductivity. Polytetrafluoroethylene pH 0-14 (except for molten alkali metal and fluorine under high temperature and pressure). It can have good mechanical strength between -100 ° C and 100 ° C.