German gummi metall technik seals gummi metall technik models gummi metall technik prices

gummi metall technik seals are devices that prevent fluid leakage, consisting of at least one pair of end faces perpendicular to the axis of rotation. These faces remain in contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism, in conjunction with auxiliary seals. Mechanical seals where the elastic loading mechanism and auxiliary seal are metal bellows are referred to as metal bellows seals. In light-duty seals, rubber bellows are also used as auxiliary seals; since the elastic force of rubber bellows is limited, springs are generally required to supplement the loading force. Mechanical seals are commonly abbreviated as "mech seals".

gummi metall technik seal principle

An oil film controlled by the sealing lip exists between the oil seal and the shaft, possessing fluid lubrication characteristics. Under the action of liquid surface tension, the stiffness of the oil film causes it to form a meniscus at the interface with air, preventing the leakage of the working medium and thereby 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 excessive, the oil seal will leak; if 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, overheating and wear are likely. Therefore, during installation, some oil must be applied to the sealing ring, and the skeleton oil seal must be kept perpendicular to the shaft axis. If not perpendicular, the sealing lip will wipe the lubricating oil off the shaft, leading to excessive wear of the sealing lip. During operation, it is ideal for a slight amount of lubricant to seep from the housing to maintain an oil film at the sealing surface.

gummi metall technik seal function

The primary function of a skeleton oil seal is to isolate components requiring lubrication within a transmission assembly from output components, preventing lubricating oil leakage. It is typically used on rotating shafts and is a type of rotary shaft lip seal. The skeleton acts like rebar in concrete components, providing reinforcement and allowing the oil seal to maintain its shape and tension. Based on the skeleton type, they can be classified as inner skeleton oil seals, outer skeleton oil seals, and exposed inner/outer skeleton oil seals. Skeleton oil seals are made from high-quality nitrile rubber and steel plates, offering stable quality and long service life. They are widely used in automobiles and motorcycles for crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels, and other parts. 1) Prevents sand, dust, water vapor, etc., from entering the bearing from the outside; 2) Restricts the leakage of lubricating oil from the bearing. Requirements for oil seals include dimensions (inner diameter, outer diameter, and thickness) that comply with specifications; appropriate elasticity to properly grip the shaft and provide sealing; heat resistance, wear resistance, high strength, resistance to media (oil or water, etc.), and long service life.

gummi metall technik seal functions and applications

Engine: Crankshaft – front and rear crankshaft oil seals; Valve – valve oil seals (engine repair kit 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 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 rings); Power steering booster oil seal (front half-shaft oil seal). Oil seals are required wherever a rotating housing contains liquid lubricating oil and 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 air compressor crankshaft oil seals.

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