L58x72x10 seal Germany GMN model L58x72x10 price

L58x72x10 seals are the customary name for general seals; simply put, they are seals for lubricating oil. They are mechanical components used to seal grease (oil is the most common liquid substance in transmission systems, and also refers to general liquid substances). They isolate the parts of the transmission that require lubrication from the output parts, preventing lubricating oil from leaking. Seals used for static sealing and dynamic sealing (generally reciprocating motion) are called oil seals. The representative form of oil seals is the TC oil seal, which is a double-lip oil seal with a self-tightening spring fully covered by rubber. The term "oil seal" generally refers to this type of tc cased oil seal.

L58x72x10 seal classification

Oil seals are generally divided into single-piece types and assembled types. Assembled types allow free combination of the casing and lip material, and are generally used for special oil seals. Based on sealing function, characteristics, structural type, operating state, and sealing mechanism, oil seals can be divided into various forms and have different names. However, conventionally, rotary shaft lip seals are called oil seals, while seals used for static sealing and dynamic sealing (generally reciprocating motion) are called seals. The representative form of oil seals is the TC oil seal, which is a double-lip oil seal with a self-tightening spring fully covered by rubber. The term "oil seal" generally refers to this type of tc cased oil seal.

L58x72x10 seal material

Common materials for oil seals include: Nitrile rubber, Fluorocarbon rubber, Silicone rubber, Acrylate rubber, Polyurethane, Polytetrafluoroethylene, etc. 1) Nitrile rubber (NBR): It has good heat and wear resistance, and is resistant to various lubricating oils, greases, and oil-gas mixtures. The applicable temperature range is -30 to 120 degrees Celsius. However, it cannot be used in phosphate ester hydraulic fluids or gear oils containing extreme pressure additives. It performs stably in gasoline and mineral oils with low aniline points. 2) Acrylate rubber (ACM): It has superior oil and heat resistance, wear resistance, ozone resistance, and UV radiation resistance. It is especially resistant to lubricating oils, gear oils, motor oils, engine oils, and petroleum-based hydraulic fluids containing extreme pressure agents. It is suitable for operation in the range of -30 to 150 degrees Celsius. 3) Fluorocarbon rubber: It offers aging resistance, heat resistance, and oil resistance. It is suitable for almost all lubricating oils, fuel oils, and gasoline. It does not harden easily in oils containing extreme pressure additives. However, its cold resistance and high-temperature wear resistance are poor, and it has significant permanent compression set. It is suitable for temperatures from -20 to 250 degrees Celsius. 4) Silicone rubber: It has outstanding high and low-temperature resistance. It can be used long-term at 150 degrees Celsius without performance change; it can be used continuously at 200 for 10000h. It maintains its unique elasticity, ozone resistance, and weather resistance in the working temperature range of -70 to 260. 5) Polytetrafluoroethylene (PTFE): It has outstanding chemical stability, thermal stability, friction reduction, and self-lubrication. Its decomposition temperature is above 400. Therefore, it can work normally in the temperature range of -200 to 300 degrees Celsius. Except for free fluorine and alkali metals, it has excellent corrosion resistance to chemicals, solvents, hydroxides, and acids. Nitrile rubber and fluorocarbon rubber are widely used oil seal materials. The former is low-cost, but the latter offers significant improvements in temperature resistance and sealing performance. However, the latter is more expensive and still retains some negative common characteristics of ordinary rubber materials, such as poor wear resistance, short service life, and high sensitivity to shaft eccentricity. Leakage phenomena remain relatively common. PTFE oil seals are high-tech products and represent the future direction of oil seal development [2]. When selecting oil seal materials, one must consider the material's compatibility with the working medium, adaptability to the working temperature range, and the lip's ability to follow the rotating shaft during high-speed rotation. Generally, when an oil seal is in operation, the temperature of its lip is 20 to 50℃ higher than the working medium temperature, which should be noted when selecting oil seal materials. The working range of an oil seal depends on the material used: for Nitrile rubber (NBR), it is -40 to 120℃; for Acrylate rubber (ACM), it is -30 to 180℃; for Fluorocarbon rubber (FPM), it is -25 to 300℃.

L58x72x10 seal function and application

Engine: Crankshaft -- front and rear crankshaft oil seals; Valve -- valve oil seals (engine repair kit o O-rings) (distributor oil seal, water pump oil seal, balance shaft oil seal, oil pump oil seal...); Camshaft -- camshaft oil seal; Transmission: Transmission -- front and rear transmission oil seals; Shift lever oil seal (transmission repair kit o O-rings) (Transfer case -- front and rear transfer case oil seals); Rear Axle: Half shaft -- rear half shaft oil seal; Differential -- (front/rear) pinion oil seal; Rear wheel oil seal; Front wheel oil seal; Steering gear oil seal (steering gear repair kit o O-rings); Power steering booster oil seal (front half shaft oil seal). Oil seals are required wherever there is liquid lubricating oil inside a rotating housing that connects to the exterior. Some are made of rubber, some of metal, but most are steel-cased rubber, such as rear crankshaft oil seals, front and rear transmission oil seals, left and right half shaft oil seals, final drive front oil seals, and air compressor crankshaft oil seals.

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