Germany flowserve seals flowserve models flowserve prices

flowserve seals utilize the "container" concept from transportation to create cartridge seals. The rotating and stationary parts of this seal are pre-assembled into a single unit before installation. After passing inspection and pressure testing, the unit is mounted on the shaft within the stuffing box, fixed to the shaft with set screws, and the gland bolts are tightened. Once the cartridge positioning tabs are removed, the mechanical seal operates with parallel faces and is ready for service. This approach not only simplifies assembly but also ensures assembly quality. Welded metal bellows mechanical seals are all designed as cartridge seals, offering these advantages. Cartridge seals are also a type of cartridge mechanical seal. In this design, the stationary ring, rotating ring, sleeve, gland, and auxiliary seals are all assembled together on a single sleeve before installation, facilitating inspection of assembly quality. After passing inspection, simply tighten the seal cover and secure the screws. This pre-assembled, inspected, and tested seal component makes it easy to ensure installation and assembly quality.

flowserve seal principles

An oil film controlled by the oil seal lip exists between the oil seal and the shaft, providing 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 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 film is too thick, the oil seal will leak; if too thin, 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, slight seepage of lubricant from the housing is ideal to maintain an oil film at the sealing surface.

flowserve seal applications

Skeleton oil seals are widely used in aviation, automotive, motorcycle, railway, vehicle, shipbuilding, home appliance, and construction machinery industries. They are suitable for sealing rotating and reciprocating motions. Installed on various heavy-duty engines, gearboxes, axles, ships, cylinders, and other components. Their main function is to prevent the sealed medium (gas or liquid) from leaking out and external contaminants from entering the system. Note: Standard oil seals have a very limited pressure range, typically 0.03 MPa. This pressure is generally generated by the height difference of the lubricating oil itself. If higher pressures need to be sealed, high-pressure oil seals (generally capable of withstanding up to 1 MPa) or other sealing types should be selected.

flowserve seal functions and uses

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 oil seal (front half-shaft oil seal). Oil seals are required wherever a rotating housing contains liquid lubricant and 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, front final drive oil seals, and compressor crankshaft oil seals.

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