German asak seals asak model asak price

asak seals are devices that prevent fluid leakage, consisting of at least one pair of end faces perpendicular to the axis of rotation that remain in contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, along with the assistance of 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".

asak Seal Introduction

A mechanical seal is a shaft sealing device for rotating machinery, such as centrifugal pumps, centrifuges, reaction vessels, and compressors. Since the drive shaft passes through the interior and exterior of the equipment, there is a circumferential gap between the shaft and the equipment. Media inside the equipment leaks outward through this gap; if the internal pressure is lower than atmospheric pressure, air leaks into the equipment. Therefore, a shaft sealing device is required to prevent leakage. There are many types of shaft seals. Due to advantages such as low leakage and long service life, mechanical seals are the primary shaft sealing method for these equipment worldwide. Mechanical seals are also called face seals. National standards define them as: "a device that prevents fluid leakage, consisting of at least one pair of end faces perpendicular to the axis of rotation that remain in contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, along with the assistance of auxiliary seals."

asak Seal Structure and Composition

1) Main components: rotating ring, stationary ring, cooling device, and compression spring (depending on the specific equipment). 2) Auxiliary sealing elements: O-rings (including O-shape, X-shape, U-type, wedge shape, rectangular flexible graphite, PTFE-covered rubber O rings, etc.). 3) Elastic compensation mechanism: springs, push rings, spring seats, keys, or various screws. 4) Classification: single-face, double-face; balanced, unbalanced; arbitrary rotation direction, fixed rotation direction.

asak Seal Precautions

1) Obtain a fixed quantity of oil seals. 2) Keep clean from receipt of the oil seal until assembly. 3) Before assembly, inspect the oil seal. Measure all dimensions of the skeleton oil seal to ensure they match the shaft and housing dimensions. Before installing the skeleton oil seal, clearly compare the shaft diameter with the inner diameter of the oil seal to ensure they match. The internal dimensions of the housing must be suitable for the outer diameter width of the oil seal. Check whether the lip of the skeleton oil seal is damaged or deformed, and whether the spring has fallen off or rusted. Prevent the oil seal from being stored flat during transport, subjected to external squeezing and impact, which can destroy its roundness. 4) Perform machining inspection procedures before assembly. Measure whether the dimensions of the housing and shaft parts are correct, especially the internal chamfer, which must not have a slope. The end face machining of the shaft and housing must be smooth. Chamfers must be free of damage and burrs. Clean the assembly area. There must be no burrs, sand, iron chips, or other debris at the shaft insertion area (chamfer), as these can cause irregular damage to the oil seal lip. It is recommended to use an r angle for the chamfer area. 5) Regarding operational technique, use your hand to feel whether the surface is smooth and truly round. 6) Do not tear open the packaging paper of the skeleton oil seal too early before installation to prevent debris from adhering to the seal surface and entering into operation. 7) Before machine installation, apply an appropriate amount of lithium-based grease containing molybdenum disulfide between the lips of the skeleton oil seal to prevent dry grinding of the lip during instantaneous shaft startup, which affects the lip interference fit. Assemble as soon as possible. If the oil seal housing with the installed seal is not immediately mounted, cover it with a cloth to prevent foreign matter from adhering to the seal. Hands or tools applying lithium grease must be clean. 8) Skeleton oil seals must be installed flat, without tilting. It is recommended to use hydraulic equipment or sleeve tools for installation. Pressure should not be excessive, and speed must be uniform and slow. 9) Mark the machine on which the skeleton oil seal is installed for tracking purposes, and carefully monitor the entire process.

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