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Radial Shaft Seal
Radial shaft seals, also known as lip seals, are used to seal rotary elements, such as a shaft or rotating bore. Common examples include strut seals, hydraulic pump seals, axle seals, power steering seals, and valve stem seals. Early radial shaft seals utilized rawhide as the sealing element, and many present-day elastomeric seal companies were once tanneries. The advent of modern elastomers replaced rawhide, industry also added a garter spring, which helps the sealing lip compensate for lip wear and elastomer material changes. The seal construction consists of a sprung main sealing lip which has a line contact with the shaft. The line contact is formed by two angles, with the air side angle usually less than the oil side angle. Depending on the seal type these two angles are varied to create a pressure distribution at the seal contact line which has a steeper slope on the oil side of the seal. The shallower the slope on the oil side of the seal, the wetter the seal will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HNBR
Nitrile rubber, also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene. Trade names include Perbunan, Nipol, Krynac and Europrene. This rubber is unusual in being resistant to oil, fuel, and other chemicals. NBR is used in the automotive and aeronautical industry to make fuel and oil handling hoses, seals, grommets, and self-sealing fuel tanks. It is used in the nuclear industry to make protective gloves. NBR's stability at high temperatures from makes it an ideal material for aeronautical applications. Nitrile butadiene is also used to produce moulded goods, footwear, adhesives, sealants, sponges, expanded foams, and floor mats. Its resilience makes NBR a useful material for disposable lab, cleaning, and examination gloves. Nitrile rubber is more resistant than natural rubber to oils and acids, and has superior strength, but has inferior flexibility. History Nitrile rubbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stuffing Box
A stuffing box or gland package is an assembly which is used to house a gland seal. It is used to prevent leakage of fluid, such as water or steam, between sliding or turning parts of machine elements. Components A stuffing box of a sailing boat will have a stern tube that is slightly bigger than the prop shaft. It will also have packing nut threads or a gland nut. The packing is inside the gland nut and creates the seal. The shaft is wrapped by the packing and put in the gland nut. Through tightening it onto the stern tube, the packing is compressed, creating a seal against the shaft. , WindCheck Magazine, Retrieved April 27, 2016. Creating a proper plunger alignment is critical for correct flow and a long wear life. Stuffing box components are of stainless steel, brass or other application-specific m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kufstein
Kufstein (; Central Bavarian: ''Kufstoa'') is a town in the Austrian state of Tyrol, the administrative seat of Kufstein District. With a population of about 19,600 it is the second largest Tyrolean town after the state capital Innsbruck. The greatest landmark is Kufstein Fortress, first mentioned in the 13th century. The town was the place of origin of the Austrian noble family Kuefstein de. Geography It is located in the Tyrolean Unterland region on the river Inn, at the confluence with its Weißache and Kaiserbach tributaries, near the border with Bavaria, Germany. The municipal area stretches along the Lower Inn Valley between the Brandenberg Alps in the northwest and the Kaiser Mountains in the southeast. The remote Kaisertal until recently was the last settled valley in Austria without transport connections, prior to the completion of a tunnel road from Kufstein to neighbouring Ebbs in 2008. North of the town, the Inn river leaves the Northern Limestone Alps and enters the Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walther Simmer
Walther is a masculine given name and a surname. It is a German form of Walter, which is derived from the Old High German ''Walthari'', containing the elements ''wald'' -"power", "brightness" or "forest" and ''hari'' -"warrior". The name was first popularized by the famous epic German hero Walther von Aquitaine and later with the Minnesänger Walther von der Vogelweide. Given name * Walther Bauersfeld (1879–1959), German engineer who built the first projection planetarium * Walther Bothe (1891–1957), German nuclear physicist and Nobel laureate * Walther von Brauchitsch (1881–1948), German World War II field marshal * Walther Dahl (1916–1985), German World War II flying ace * Walther von Dyck (1856–1934), German mathematician * Walther Flemming (1843–1905), German biologist and a founder of cytogenetics * Walther Funk (1890–1960), economist and Nazi official convicted of war crimes in the Nuremberg Trials * Walther Hahm (1894–1951), German World War II general * Wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freudenberg Gruppe (1906–1984), German historian and an early opponent of A ...
Freudenberg can refer to: Companies * Freudenberg Group, a German family-owned diversified group of companies * Freudenberg IT, a German company Places France * Freudenberg, Moselle, a village in the French département of Moselle Germany * Schloss Freudenberg, a palace in Wiesbaden-Dotzheim * Beiersdorf-Freudenberg * Freudenberg, Bavaria, in the Amberg-Sulzbach district, Bavaria * Freudenberg, Westphalia, in the Siegen-Wittgenstein district, North Rhine-Westphalia * Freudenberg (Baden), in the Main-Tauber district, Baden-Württemberg Switzerland * Freudenberg Castle People * Freudenberg (surname) See also * Hubertus, Prince of Löwenstein-Wertheim-Freudenberg Prince Hubertus zu Loewenstein-Wertheim-Freudenberg (October 14, 1906 – November 28, 1984) was a German historian and political figure who was an early opponent of Adolf Hitler. He fled Germany and helped to promote anti-Nazism in the Uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotating Face Mechanical Seal
An end-face mechanical seal, or a mechanical end-face seal, also referred to as a mechanical face seal but usually simply as a mechanical seal, is a type of seal used in rotating equipment, such as pumps, mixers, blowers, and compressors. When a pump operates, the liquid could leak out of the pump between the rotating shaft and the stationary pump casing. Since the shaft rotates, preventing this leakage can be difficult. Earlier pump models used mechanical packing (otherwise known as gland packing) to seal the shaft. Since World War II, mechanical seals have replaced packing in many applications. An end-face mechanical seal uses both rigid and flexible elements that maintain contact at a sealing interface and slide on each other, allowing a rotating element to pass through a sealed case. The elements are both hydraulically and mechanically loaded with a spring or other device to maintain contact. For similar designs using flexible elements, see radial shaft seal (or "lip seal") ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shore A
The Shore durometer is a device for measuring the hardness of a material, typically of polymers. Higher numbers on the scale indicate a greater resistance to indentation and thus harder materials. Lower numbers indicate less resistance and softer materials. The term is also used to describe a material's rating on the scale, as in an object having a "'Shore durometer' of 90." The scale was defined by Albert Ferdinand Shore, who developed a suitable device to measure hardness in the 1920s. It was neither the first hardness tester nor the first to be called a ''durometer'' ( ISV '' duro-'' and '' -meter''; attested since the 19th century), but today that name usually refers to Shore hardness; other devices use other measures, which return corresponding results, such as for Rockwell hardness. Durometer scales There are several scales of durometer, used for materials with different properties. The two most common scales, using slightly different measurement systems, are the ASTM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Durometer
The Shore durometer is a device for measuring the hardness of a material, typically of polymers. Higher numbers on the scale indicate a greater resistance to indentation and thus harder materials. Lower numbers indicate less resistance and softer materials. The term is also used to describe a material's rating on the scale, as in an object having a "'Shore durometer' of 90." The scale was defined by Albert Ferdinand Shore, who developed a suitable device to measure hardness in the 1920s. It was neither the first hardness tester nor the first to be called a ''durometer'' ( ISV '' duro-'' and '' -meter''; attested since the 19th century), but today that name usually refers to Shore hardness; other devices use other measures, which return corresponding results, such as for Rockwell hardness. Durometer scales There are several scales of durometer, used for materials with different properties. The two most common scales, using slightly different measurement systems, are the ASTM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AEM Rubber
AEM rubber, also abbreviated AECM (ISO 1629), is an ethylene acrylic rubber Acrylic rubber, known by the chemical name alkyl acrylate copolymer (ACM) or the tradename HyTemp, is a type of rubber that has outstanding resistance to hot oil and oxidation. It belongs to specialty rubbers. It has a continuous working temperature ... with the formula: References * Rubber {{Polymer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitrile Butadiene Rubber
Nitrile rubber, also known as nitrile butadiene rubber, NBR, Buna-N, and acrylonitrile butadiene rubber, is a synthetic rubber derived from acrylonitrile (ACN) and butadiene. Trade names include Perbunan, Nipol, Krynac and Europrene. This rubber is unusual in being resistant to oil, fuel, and other chemicals. NBR is used in the automotive and aeronautical industry to make fuel and oil handling hoses, seals, grommets, and self-sealing fuel tanks. It is used in the nuclear industry to make protective gloves. NBR's stability at high temperatures from makes it an ideal material for aeronautical applications. Nitrile butadiene is also used to produce moulded goods, footwear, adhesives, sealants, sponges, expanded foams, and floor mats. Its resilience makes NBR a useful material for disposable lab, cleaning, and examination gloves. Nitrile rubber is more resistant than natural rubber to oils and acids, and has superior strength, but has inferior flexibility. History Nitrile rubbe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydraulic Pump
Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy ( hydrostatic energy i.e. flow, pressure). It generates flow with enough power to overcome pressure induced by the load at the pump outlet. When a hydraulic pump operates, it creates a vacuum at the pump inlet, which forces liquid from the reservoir into the inlet line to the pump and by mechanical action delivers this liquid to the pump outlet and forces it into the hydraulic system. Hydrostatic pumps are positive displacement pumps while hydrodynamic pumps can be fixed displacement pumps, in which the displacement (flow through the pump per rotation of the pump) cannot be adjusted, or variable displacement pumps, which have a more complicated construction that allows the displacement to be adjusted. Hydrodynamic pumps are more frequent in day-to-day life. Hydrostatic pumps of various types ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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