German etasa seals etasa models etasa prices

etasa seals are a type of friction seal or stuffing box used to prevent liquid leakage between the shaft and bearing of compressors or other fluid handling equipment. They are also sealing devices designed to prevent leakage at the pump shaft and housing. Common types of shaft seals include packing seals, mechanical seals, and power seals. The shaft seal for reciprocating pumps is typically a packing seal. When transporting media where leakage is not permitted, diaphragm reciprocating pumps can be used. The shaft seals for rotary pumps (including vane pumps, rotor pumps, etc.) mainly consist of packing seals, mechanical seals, and power seals.

Advantages of etasa seals

1) The oil seal structure is simple and easy to manufacture. Simple oil seals can be molded in one step; even for the most complex oil seals, the manufacturing process is not complicated. Metal-cased oil seals only require processes such as stamping, bonding, embedding, and molding to combine metal and rubber into the required oil seal. 2) Oil seals are lightweight and consume less material. Each oil seal is a combination of thin-walled metal and rubber components, resulting in minimal material consumption and very light weight for each seal. 3) The installation space for oil seals is small, with compact axial dimensions, making them easy to machine and allowing for more compact machinery. 4) Oil seals offer good sealing performance and have a long service life. They provide a certain degree of adaptability to machine vibration and main shaft eccentricity. 5) Oil seals are easy to disassemble and convenient to inspect. 6) Oil seals are inexpensive.

Precautions for etasa seals

1) Preparation and precautions before startup: a. Conduct a comprehensive inspection to ensure that the mechanical seal, auxiliary devices, and pipeline installations are complete and meet technical requirements. b. Perform a static pressure test on the mechanical seal before startup to check for leaks. If there is significant leakage, identify the cause and take measures to eliminate it. If this is ineffective, disassemble, inspect, and reinstall. The static pressure test pressure is generally 2~3 kg/cm². c. Rotate the pump by hand according to its direction of rotation to check if it moves smoothly and evenly. If rotation is difficult or stuck, check for errors in assembly dimensions and reasonable installation. 2) Installation and shutdown: a. Keep the seal chamber filled with liquid before startup. For media that solidify, use steam to heat the seal chamber to melt the medium. Manual rotation before startup is mandatory to prevent sudden startup from causing the soft ring to shatter. b. For mechanical seals utilizing an external pump seal oil system, start the seal oil system first. Stop the seal oil system last after shutdown. c. After stopping a hot oil pump, do not immediately stop the cooling water for the seal oil chamber and face seal. Wait until the oil temperature at the face seal drops below 80 degrees before stopping the cooling water to avoid damaging seal components. 3) Operation: a. If slight leakage occurs after pump startup, observe for a period. If the leakage does not decrease after continuous operation for 4 hours, stop the pump for inspection. b. The pump operating pressure should be stable, with pressure fluctuations not exceeding 1 kg/cm². c. During pump operation, avoid cavitation to prevent dry friction on the sealing surfaces and seal damage. d. Regularly inspect the sealing condition. During operation, if leakage exceeds the standard (no more than 5 drops/min for heavy oil, no more than 10/min for light oil), and there is no improvement within 2-3 days, stop the pump to inspect the sealing device.

Installation and shutdown of etasa seals

1) Keep the seal chamber filled with liquid before startup. For media that solidify, use steam to heat the seal chamber to melt the medium. Manual rotation before startup is mandatory to prevent sudden startup from causing the soft ring to shatter. 2) For mechanical seals utilizing an external pump seal oil system, start the seal oil system first. Stop the seal oil system last after shutdown. 3) After stopping a hot oil pump, do not immediately stop the cooling water for the seal oil chamber and face seal. Wait until the oil temperature at the face seal drops below 80 degrees before stopping the cooling water to avoid damaging seal components.

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