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Rubber O-rings in the valve in use
Rubber O-ring as widely used in all walks of life sealing element member, rubber O-ring can be installed in various types of valves at a predetermined temperature, pressure, and various liquid and gaseous media at rest or in motion from the state seal protection. [View Details] -
EPDM rubber is a low density, a density of 7 to 0.8. Can be combined with a large number of oil-filled and a filler, which can reduce the cost of rubber products, make up EPDM raw rubber shortcomings of high prices, and on the high Mooney EPDM value, the high padded physical and mechanical properties decrease slightly.
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Hydraulic O-ring seals as a base member, is effective to prevent the leakage of effective prevention and mitigation of environmental pollution in an important way hydraulic O-ring include the following main properties: ? small amount of leakage; ? good compatibility; ? friction less resistance; ? use a longer time; ? cheaper.
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Hydraulic seal hydraulic and pneumatic drive system is the most widely used a seal. It is mainly used for static seals and reciprocating seals. The use of speed range is generally 0.005 ~ 0.3m / s. Seal for rotary motion, the only low-speed rotary sealing device. Hydraulic seals applications is very broad, rubber material they use different areas of the industry are different. In general, of course, the most widely used rubber seals or nitrile rubber, EPDM rubber, hydrogenated nitrile rubber, silicone, fluorine rubber.
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PTFE rubber seals advantages as follows: PTFE rubber seals can be used in a short time high temperature at 300 ?. PTFE rubber seals are PTFE molded blank after secondary processing system. Can be applied to food, medicine, medicine, hygiene demanding areas; physiologically inert, sterilization, disinfection; having a small friction resistance, adhesion and motility without effect; resistance to deformation, anti-extrusion resistance; low temperature: a good mechanical toughness, even if the temperature drops to -196 ?, but also to maintain a 5% elongation; corrosion-resistant: resistant to acid, alkali, aqua regia and various organic solvents; resistant insulation: dielectric properties with temperature and frequency irrelevant; high lubricity: the lowest friction coefficient in the solid material; do not adhere: does not adhere to any substance; strong self-lubrication: solid material friction coefficient of 0.04; non-toxic: with physical inertia, can be implanted in the human body; anti-aging long-term use in the atmosphere; pollution prevention: metal element blank value is low, the lead content of less than 10-11 g / ml, the uranium content of less than 10-12 g / ml;
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Ideal storage state of the rubber O-ring
Rubber O-ring as a reserve parts during storage may alter its physical and chemical nature of the failure. Such as: distortion, oxygen, ozone, light, heat, moisture, oil, or the effects of chemical solvents, etc., rubber O-ring needs to be done during the storage and maintenance of the basic plot and prolong life. [View Details] -
Selection of rubber material - Xinhua Xu Hydraulic O-rings
Hydraulic O-rings used in hydraulic valves in the most common and one of the best sealing effect of the sealing element. [View Details] -
Xinhua Xu fluorine rubber O-ring
Xinhua Xu fluorine rubber O-ring at 250 ? long-term use, the main characteristics of short-term use at 300 ?, Viton O-rings are temperature and chemical resistant, and have a good anti-aging and anti-ozone performance and infiltration tolerance is very low. Viton O-ring, even under very poor working conditions, there is still a very good wear resistance. According to reports, DuPont developed VitonA decade after natural storage function is still satisfactory in ozone concentration of 0.01% after 45 days of air effect is not obvious cracks. [View Details] -
Xinhua Xu hydraulic machinery repair process cartridge O-ring has three colors red yellow box yellow box to JIS-day specifications, the green box to the European standard metric specifications, red box for the United States marked Inch specifications. O-ring repair box product is a circular cross-section of the rubber ring, because of its cross-section O type, so called O-rings.
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Xinhua Xu hydraulic machinery repair process cartridge O-ring has three colors red yellow box yellow box to JIS-day specifications, the green box to the European standard metric specifications, red box for the United States marked Inch specifications. O-ring repair box product is a circular cross-section of the rubber ring, because of its cross-section O type, so called O-rings.
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