German compriband seals compriband models compriband prices

compriband seals are a common term for general seals, simply referring to lubricating oil seals. They are mechanical components used to seal grease (oil is the most common liquid in transmission systems, and also refers to general liquids). They isolate lubricated parts in the transmission from output parts to prevent lubricating oil leakage. 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. Generally, when people refer to oil seals, they often mean this type of tc skeleton oil seal.

compriband seal principle

Due to the oil film controlled by the oil seal lip between the oil seal and the shaft, this oil film has fluid lubrication characteristics. Under the action of liquid surface tension, the stiffness of the oil film causes the end where the oil film contacts air to form a meniscus, preventing leakage of the working medium and thus achieving sealing of the rotating shaft. The sealing capability of an oil seal depends on the thickness of the oil film on the sealing surface; if the thickness is too great, the oil seal will leak; if the thickness is too small, dry friction may occur, causing wear on the oil seal and shaft; if there is no oil film between the sealing lip and the shaft, it is easy to cause heating and wear. Therefore, during installation, some oil must be applied to the sealing ring, and it must be ensured that the skeleton oil seal is perpendicular to the shaft axis. If not perpendicular, the sealing lip of the oil seal will drain the lubricating oil from the shaft, which will also lead to excessive wear of the sealing lip. During operation, it is ideal for a slight amount of lubricant in the housing to seep out slightly to achieve the state of forming an oil film at the sealing surface.

compriband seal function

The function of a skeleton oil seal is generally to isolate lubricated parts in the transmission from output parts to prevent lubricating oil leakage. It is usually used on rotating shafts and is a type of rotating shaft lip seal. The skeleton acts like reinforcement bars in concrete components, providing strengthening and allowing the oil seal to maintain its shape and tension. According to the skeleton type, it can be divided into inner skeleton oil seals, outer skeleton oil seals, and exposed inner and outer skeleton oil seals. Skeleton oil seals are made of high-quality nitrile rubber and steel plates, offering stable quality and long service life. They are widely used in automobiles, motorcycles, crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels, and other parts. 1) Prevent sand, dust, water vapor, etc., from entering the bearing from the outside; 2) Restrict lubricating oil in the bearing from leaking out. Requirements for oil seals include dimensions (inner diameter, outer diameter, and thickness) complying with regulations; appropriate elasticity to properly grip the shaft and provide a sealing effect; heat resistance, wear resistance, good strength, resistance to media (oil or water, etc.), and long service life.

compriband seal functions and applications

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-reinforced rubber, such as rear crankshaft oil seals, front and rear transmission oil seals, left and right half-shaft oil seals, front main reducer oil seals, and compressor crankshaft oil seals.

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