| Customization: | Available |
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| Material: | NBR/Silicone/EPDM/FKM/HNBR |
| Application: | for Industry |
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The working principle of the J-shaped rubber ring is to use the central bulge after installation, and the tight hoop is conical on the rotating shaft of the rubber washer, when the internal vacuum is reached, the external atmospheric pressure of the rubber ring tightly pressed on the rotating shaft to achieve the purpose of vacuum seal. Axle diameter range is generally 3 ~ 200mm. The J-shaped rubber seal ring can be used in the vacuum shaft seal with rotating shaft speed less than 15m/s, rotating speed less than 3500r/min, and working temperature of -30ºC ~ 250ºC.
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EPDM
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Good resistance to hot water and steam, detergents, caustic potash solutions, silicone oil and greases, many polar solvents, and many diluted acids and chemicals, along with a high level of ozone resistance. EPDM materials are totally unsuitable for use with all mineral oil products (lubricants, fuels).
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FKM
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Good chemical resistance to mineral oils and greases, synthetic oils and greases, engine, transmission and ATF oils to approx. +150°C, fuels, non-flammable hydraulic pressure fluids HFD, aliphatic, aromatic and chlorinated hydrocarbons, water to max. +80°C, excellent resistance to weathering, ozone and ageing, very low gas permeability (and therefore excellent for vacuum application) and resistance to a wide range of chemicals.
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HNBR
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HNBR is obtained by fully or partially hydrogenating NBR. It leads to considerable improvement in resistance to heat, ozone and ageing, and gives it very good mechanical properties, e.g. good resistance to wear. The media resistance compares to that of NBR. HNBR has a good resistance to some refrigerants. The temperature application range is from -30°C to +150°C.
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NBR
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Good chemical resistance to mineral oils and greases, hydraulic oils H, HL, HLP, non-inflammable hydraulic pressure fluids HFA, HFB, HFC to approx. +50°C and water to max. +80°C
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VMQ
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Good resistance to water (up to 100 °C), aliphatic engine and transmission oils, animal and plant oils and fats. VMQ is generally not resistant to fuels, aromatic mineral oils, steam (short term up to 120 °C possible), silicone oils and greases, acids and alkaline compounds.
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