German KOSTYRKA seals KOSTYRKA models KOSTYRKA prices

KOSTYRKA seals are sealing devices installed to prevent leakage between the pump shaft and the housing. Common types of shaft seals include packing seals, mechanical seals, and power seals. The shaft seal of a reciprocating pump is usually a packing seal. When transporting media where leakage is not permitted, a diaphragm reciprocating pump can be used. The shaft seals of rotary pumps (including vane pumps, rotor pumps, etc.) mainly include packing seals, mechanical seals, and power seals. The shaft seal of a reciprocating pump is usually a packing seal. When transporting media where leakage is not permitted, a diaphragm reciprocating pump can be used. The shaft seals of rotary pumps (including vane pumps, rotor pumps, etc.) mainly include packing seals, mechanical seals, and power seals.

Advantages of KOSTYRKA seals

1) Oil seals have a simple structure and are 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, inlaying, 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 components, consuming very little material, so each oil seal is very light. 3) The installation space for oil seals is small, with small axial dimensions, making them easy to machine and allowing for compact machine design. 4) Oil seals offer good sealing performance and a long service life. They have a certain 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 KOSTYRKA seals

1) Preparation and precautions before startup: a, comprehensively check whether the mechanical seal, as well as auxiliary devices and pipeline installations, are complete and comply with technical requirements. b, 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, disassemble, inspect, and reinstall. The static test pressure is generally 2~3 kg/cm². c, rotate the pump according to its direction of rotation to check if it moves lightly and evenly. If rotation is difficult or stuck, check whether the assembly dimensions are incorrect or the installation is unreasonable. 2) Installation and shutdown: a, keep the seal chamber filled with liquid before startup. When transporting media that solidify, use steam to heat the seal chamber to melt the media. 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 the seal parts. 3) Operation: a, if slight leakage occurs after the pump starts, observe for a period of time. If the leakage does not decrease after continuous operation for 4 hours, stop the pump for inspection. b, the operating pressure of the pump 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, frequently check 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.

Precautions for KOSTYRKA seals

1) Obtain a fixed quantity of oil seals. 2) Keep clean from the time the oil seal is received until assembly. 3) Before assembly, inspect the oil seal. Measure whether the dimensions of all parts of the cased oil seal match the shaft and housing dimensions. Before installing the cased 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 suit the outer diameter width of the oil seal. Check whether the lip of the cased oil seal is damaged or deformed, and whether the spring has fallen off or rusted. Prevent the oil seal from being placed flat during transportation, which could affect its roundness due to external squeezing and impact. 4) Perform machining inspection procedures before assembly. Measure whether the dimensions of the housing and shaft are correct, especially the internal chamfer, which must not have a slope. The end faces of the shaft and housing must be machined smoothly, with no damage or burrs on the chamfers. Clean the assembly area. There must be no burrs, sand, iron chips, or other debris at the shaft insertion point (chamfer), as these can cause irregular damage to the oil seal lip. It is recommended to use a r angle for the chamfer. 5) In terms of 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 cased oil seal too early before installation to prevent debris from adhering to the seal surface and entering into operation. 7) Before mounting, apply an appropriate amount of lithium-based grease containing molybdenum disulfide between the lips of the cased oil seal to prevent dry wear on 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 mounted immediately, cover it with a cloth to prevent foreign matter from adhering to the seal. Hands or tools applying lithium grease must be clean. 8) Cased oil seals must be installed flat, without tilting. It is recommended to use hydraulic equipment or sleeve tools for installation. Do not apply excessive pressure; the speed should be uniform and slow. 9) Mark the machine on which the cased oil seal is installed for tracking purposes, and pay close attention to the entire process.

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