News & Blogs

Description Types of lip gaskets The following table shows types of gaskets for oil hydraulic cylinders and their characteristics. Gaskets for oil hydraulic cylinders (dedicated to piston seals) Gaskets for oil hydraulic cylinders (dedicated to rod seals) Shape classification Cross-section shape of gaskets Material Characteristics L Urethane rubber, nitrile rubber, fluororubber A gasket dedicated to…

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Introduction Oil seals are indispensable parts for sealing all types of equipment. They have a number of features such as simple structures, relatively low cost, and usability across a wide range of environmental conditions. Approx. 40 large and small oil seals are employed in automobiles. Typical shapes and materials of oil seals for automobiles ■Basic…

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Types of seals Materials of seals Characteristics Major applications Rotary seals, oil seals, gland Gaskets, mechanical seals Nitrile rubber (NBR) Materials of general-purpose seals Oil seals Acrylic rubber (ACM) Materials of heat-resistant and abrasion-resistant seals Silicone rubber (VMQ) Materials of heat-resistant and abrasion-resistant seals. Low oil resistance. Fluororubber (FKM) Materials of heat-resistant and oil-resistant seals…

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General-purpose seal technology Seals are indispensable sealing devices used in automobiles, airplanes and other vehicles, construction machines, equipment at petrochemical plants, home appliances, and various other machines. NOK offers a wide variety of seal products of very high reliability, including oil seals, based on its constant and focused research on materials, workings, and design. MORE…

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Basic Construction Developing and charging rollers The developing roller feeds a specified quantity of toner to the photoreceptor, and the charging roller applies a specified quantity of charges to the photoreceptor. Our products feature good control of conductivity at high precision. Pressurizing and heat rollers and fixation belt The pressurizing roller applies uniform pressure while…

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Humidifying membranes for fuel cells currently manufactured by NOK are hollow fiber membranes with nano-order pores provided on the membrane surface in our unique composition design. When air containing water vapor (wet gas) is brought into contact with the membrane, the water vapor is condensed to water in the pores and returned to vapor on…

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Concentration of immersion chemical Citric acid: 50,000 ppm Sodium hypochlorite: 3,000 ppm Immersion temperature 25℃ (ambient temperature) Immersion duration 1,200 hours(equivalent to 10 years: Chemical cleaning for 2 h/week) , Effective length of membrane 1500mm Filter system Suction from the inner side of the membrane Suction pressure -60kPa Substance to be filtered Raw water sludge…

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■ Follow fibers in 3D network structure thanks to our unique membrane production technology ■ Enhanced effects of backwash thanks to its asymmetric structure ■ High membrane flux and extended service life Basic Information Documents and Catalogs Basic specifications Membrane material PSU Cutoff molecular weight 150,000 Da Nominal membrane area 45 ㎡ Pure water flux…

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Standard modules We have achieved the highest flow rate as membranes for domestic water purifiers in the industry.A wide variety of hollow fiber membranes are available. MF and UF membranes can be selected according to purposes.They may be used with our unique hydrophobic membranes (for air bleeding) to solve air lock problems. List of standard…

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General-purpose seal technology Seals are indispensable sealing devices used in automobiles, airplanes and other vehicles, construction machines, equipment at petrochemical plants, home appliances, and various other machines. NOK offers a wide variety of seal products of very high reliability, including oil seals, based on its constant and focused research on materials, workings, and design. MORE…

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