German ite intertechnik seals, ite intertechnik models, ite intertechnik prices

ite intertechnik seals are typical representatives of oil seals. The term "oil seal" generally refers to skeleton oil seals. The function of an oil seal is to isolate components requiring lubrication within transmission parts from the external environment, preventing lubricant leakage. The skeleton acts like rebar in concrete components, providing reinforcement and enabling the oil seal to maintain its shape and tension. Based on structural form, they can be divided into single-lip skeleton oil seals and double-lip skeleton oil seals. The secondary lip of a double-lip skeleton oil seal serves as a dust shield, preventing external dust, impurities, etc., from entering the machine interior. Based on skeleton type, they can be classified into inner-covered skeleton oil seals, exposed skeleton oil seals, and assembled oil seals. Based on operating conditions, they can be divided into rotating skeleton oil seals and reciprocating skeleton oil seals. They are used in gasoline engine crankshafts, diesel engine crankshafts, gearboxes, differentials, shock absorbers, engines, axles, and other locations.

ite intertechnik seal classification

1) Packing seal: The packing seal has a simple structure, low price, and convenient maintenance. However, it has high leakage volume and significant power loss. Therefore, packing seals are used for transporting general media, such as water; they are generally not suitable for petroleum and chemical media, especially valuable, flammable, explosive, or toxic media. 2) Mechanical seal: Mechanical seals (also known as face seals) offer good sealing performance, very low leakage, and long service life, but they are expensive and have higher requirements for processing, installation, maintenance, and repair compared to general seals. Mechanical seals are suitable for transporting petroleum and chemical media and can be used with media of various viscosities, strong corrosivity, and containing particles. The American Petroleum Institute standard API610 (8rd edition) stipulates that cartridge mechanical seals should be installed unless otherwise specified by the user. 3) Dynamic seal: Dynamic seals can be divided into back-vane seals and auxiliary impeller seals. During pump operation, the centrifugal force of the back vanes (or auxiliary impeller) reduces the pressure of the medium at the shaft seal to atmospheric or negative pressure, preventing leakage during use. When stopped, the centrifugal force disappears, and the sealing effect of the back vanes (or auxiliary impeller) fails; at this point, the stationary sealing device provides the seal. Packing seals are commonly used in the stationary sealing devices paired with back-vane (or auxiliary impeller) systems. Packing seals come in two types: standard and mechanically adjustable. Standard packing seals are similar to those in general packing seal pumps, requiring slight positive pressure at the shaft seal to avoid dry friction of the packing. Mechanically adjustable packing seals use counterweights to loosen the packing during pump operation and tighten it when stopped. Dynamic seals offer reliable performance, low price, and convenient maintenance, making them suitable for transporting media with many solid particles, such as slurry pumps and feed slurry pumps in the phosphate industry. The disadvantages are greater power loss compared to mechanical seals and shorter service life of the stationary sealing device. The seal between the rotating pump shaft and the fixed pump casing is called the shaft seal. Its function is to prevent high-pressure liquid from leaking out along the shaft or external air from infiltrating along the shaft. For centrifugal pumps, the shaft seal is a dynamic seal. Based on whether the sealing surfaces contact, it can be divided into contact dynamic seals and non-contact dynamic seals. In contact dynamic seals, the sealing device contacts the shaft, resulting in relative friction. Contact dynamic seals include packing seals and mechanical seals.

ite intertechnik seal operation

1) If slight leakage occurs after the pump starts, observe it for a period. If the leakage does not decrease after continuous operation for 4 hours, stop the pump for inspection. 2) The pump operating pressure should be stable, with pressure fluctuations not exceeding 1 kg/cm². 3) During pump operation, avoid cavitation to prevent dry friction and damage to the sealing surfaces. 3) 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 drops/min for light oil), and there is no improvement within 2-3 days, stop the pump to inspect the sealing device.

ite intertechnik seal common issues

The absence of leakage due to sealing issues is a perpetual pursuit for chemical equipment, which has driven the increasingly widespread application of magnetic drive pumps and canned motor pumps. However, there is still a long way to go to truly achieve zero leakage, such as addressing the service life of isolation cans in magnetic drive pumps and shielding cans in canned motor pumps, material pitting corrosion issues, the need for sealing materials with good corrosion resistance, and the reliability of static seals. The following provides a brief introduction to basic conditions regarding sealing: 1. Sealing types For static seals, there are typically only two types: gaskets and O-rings, with O rings being the most widely used; for dynamic seals, chemical pumps rarely use packing seals, relying mainly on mechanical seals. Mechanical seals are further categorized into single-face and double-face, as well as balanced and unbalanced types. Balanced types are suitable for sealing high-pressure media (typically referring to pressures greater than 1.0MPa). Double-face mechanical seals are mainly used for media that are high-temperature, prone to crystallization, viscous, contain particles, or are toxic and volatile. For double-face mechanical seals, a barrier fluid should be injected into the seal chamber, with its pressure generally 0.07 to 0.1MPa higher than the medium pressure. 2. Sealing materials The materials for static seals in chemical pumps are generally fluororubber, with polytetrafluoroethylene materials used only in special cases. The material configuration of the rotating and stationary rings in mechanical seals is critical. It is not necessarily optimal to pair cemented carbide with cemented carbide; aside from the high cost, it is unreasonable if there is no hardness difference between the two. Therefore, it is best to select materials based on the characteristics of the medium (Note: The American Petroleum Institute API610 Eighth Edition provides relatively detailed specifications for typical configurations of mechanical seals and piping systems in Appendix D).

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