German Marchel seals Marchel models Marchel prices

Marchel seals refer to devices that prevent fluid leakage, formed by at least one pair of end faces perpendicular to the axis of rotation maintaining contact and sliding relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, in conjunction with auxiliary seals. When the auxiliary seal of the compensation ring is a metal bellows, it is called a bellows mechanical seal. There are mainly the following four types of components. a. Main sealing elements: rotating ring and stationary ring. b. Auxiliary sealing elements: O-rings. c. Clamping elements: springs, thrust rings. d. Drive elements: spring seats and keys or fixing screws.

Marchel seal features

1) No need to measure the seal working length during installation; 2) The shaft can be adjusted at any time; 3) No leakage occurs at startup because the seals have been pre-tested; 4) During installation, only the seal cover bolts need to be tightened, ensuring easy assembly quality control; 5) Protects the sealing surfaces from contamination by debris or damage due to operational errors before installation or startup; 6) Can be readjusted after thermal expansion of the machinery; 7) Self-centering through fit; 8) Seals can be easily removed for cleaning and inspection without disassembling the pump equipment. The API682 standard recommends the use of cartridge mechanical seals for all mechanical seals.

Marchel seal startup preparation

1) Conduct a comprehensive inspection of the mechanical seal, as well as the completeness of the installation of auxiliary devices and pipelines, to ensure they meet technical requirements. 2) Perform a static pressure test on the mechanical seal before startup to check for leakage. If there is significant leakage, identify the cause and eliminate it. If this is ineffective, dismantle, inspect, and reinstall. The general static test pressure is 2~3 kg/cm². 3) Rotate the pump according to its direction of rotation to check if it moves smoothly and evenly. If rotation is difficult or stuck, check for incorrect assembly dimensions or unreasonable installation.

Marchel 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 air compressor crankshaft oil seals.

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