German Hannen Stein seals, Hannen Stein models, Hannen Stein prices

Hannen Stein seals are the customary term for general seals; simply put, they are seals for lubricating oil. They are mechanical components used to seal grease (oil is the most common liquid in transmission systems, and the term also refers to general liquids). They isolate components requiring lubrication from output components in the transmission assembly to prevent lubricant leakage. Seals used for static sealing and dynamic sealing (typically reciprocating motion) are called oil seals. The representative form of an oil seal is the TC oil seal, which is a double-lip oil seal with a self-tightening spring fully encapsulated in rubber. Commonly referred to oil seals often refer to this type of tc cased oil seal.

Advantages of Hannen Stein seals

1) Simple oil seal structure, easy to manufacture. Simple oil seals can be molded in one step; even the most complex oil seals do not have complicated manufacturing processes. Metal-cased oil seals only require processes such as stamping, bonding, insertion, and molding to combine metal and rubber into the required oil seal. 2) Oil seals are lightweight and consume little material. Each oil seal is a combination of thin-walled metal and rubber parts, resulting in minimal material consumption and very light weight per seal. 3) Oil seals have a small installation footprint and small axial dimensions, are easy to machine, and help make machinery compact. 4) Oil seals offer good sealing performance and long service life. They have certain adaptability to machine vibration and spindle eccentricity. 5) Oil seals are easy to disassemble and convenient to inspect. 6) Oil seals are inexpensive.

Precautions for Hannen Stein seals

1) Preparation and precautions before startup: a. Comprehensively inspect the mechanical seal, as well as auxiliary devices and piping installations, to ensure they are complete and comply with technical requirements. b. Conduct a static pressure test on the mechanical seal before startup to check for leakage. If there is significant leakage, identify the cause and take measures to eliminate it. If this is ineffective, disassemble, inspect, and reinstall. The static test pressure is generally 2~3 kg/cm². c. Rotate the pump by hand in the direction of rotation to check if it is light and uniform. If rotation is difficult or stuck, check whether assembly dimensions are incorrect or installation is improper. 2) Installation and shutdown: a. Keep the seal chamber filled with liquid before startup. When conveying solidifying media, use steam to heat the seal chamber to melt the medium. Manual rotation must be performed before startup to prevent sudden startup from causing the soft ring to shatter. b. For mechanical seals utilizing an external seal oil system, start the seal oil system first. Stop the seal oil system last after shutdown. c. Do not immediately stop the cooling water for the seal oil chamber and face seal after stopping a hot oil pump. 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 continuous operation for 4 hours does not reduce the leakage, stop the pump for inspection. b. Pump operating pressure should be stable, with pressure fluctuations not exceeding 1 kg/cm². c. During pump operation, avoid cavitation to prevent dry friction of the sealing faces and seal damage. d. Regularly inspect the sealing condition. During operation, if leakage exceeds the standard (heavy oil not more than 5 drops/min, light oil not more than 10/min), and there is no improvement trend within 2-3 days, stop the pump to inspect the sealing device.

Installation and shutdown of Hannen Stein seals

1) Keep the seal chamber filled with liquid before startup. When transporting solidifying media, use steam to heat the seal chamber to melt the medium. Manual rotation must be performed before startup to prevent sudden startup from causing the soft ring to shatter. 2) For mechanical seals using an external pump seal oil system, start the seal oil system first. Stop the seal oil system last after shutdown. 3) Do not immediately stop the cooling water for the seal oil chamber and face seal after stopping a hot oil pump. 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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