Germany igus seals igus models igus prices

igus seals are a common term for general seals, simply referring to lubricating oil seals. They are mechanical components used to seal grease (oil is the most common liquid substance in transmission systems, and also refers to general liquid substances), isolating the parts requiring lubrication in the transmission components from the output parts to prevent lubricating oil leakage. Seals used for static sealing and dynamic sealing (generally reciprocating motion) are called oil seals. The representative form of oil seals is the TC oil seal, which is a double-lip oil seal with a self-tightening spring fully covered by rubber. Generally, when people refer to oil seals, they often mean this type of tc skeleton oil seal.

igus seal classification

1) Packing seal: The packing seal features a simple structure, low cost, and easy maintenance. However, it has high leakage 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 for valuable, flammable, explosive, or toxic media. 2) Mechanical seal: A mechanical seal (also known as a face seal) provides good sealing performance with minimal leakage and long service life, but it is expensive and has higher requirements for machining, installation, maintenance, and repair compared to general seals. Mechanical seals are suitable for transporting petroleum and chemical media and can be used for media with various viscosities, strong corrosiveness, and solid particles. The American Petroleum Institute standard API610 (8rd edition) stipulates that cartridge mechanical seals shall 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 medium pressure at the shaft seal to atmospheric or negative pressure, preventing leakage during use. When the pump stops, the centrifugal force disappears, and the sealing effect of the back vanes (or auxiliary impeller) fails; at this point, the shutdown sealing device provides the sealing function. Packing seals are commonly used in the shutdown sealing devices associated with back-vane (or auxiliary impeller) seals. There are two types of packing seals: standard type and mechanically adjustable type. The standard packing seal is similar to conventional packing seal pumps, requiring a slight positive pressure at the shaft seal to prevent dry friction of the packing. The mechanically adjustable packing seal uses counterweights to loosen the packing during pump operation and tighten it when stopped. Dynamic seals offer reliable performance, low cost, and easy maintenance, making them suitable for transporting media with a high content of solid particles, such as slurry pumps and ore pulp pumps in the phosphate industry. The disadvantages are greater power loss compared to mechanical seals and shorter service life of the shutdown sealing device. The seal between the rotating pump shaft and the stationary pump casing is called the shaft seal. Its function is to prevent high-pressure liquid from leaking out of the pump along the shaft or outside air from entering along the shaft. For centrifugal pumps, the shaft seal is a type of dynamic seal. Depending on whether the sealing surfaces are in contact, dynamic seals can be classified as contact dynamic seals and non-contact dynamic seals. In contact dynamic seals, the sealing device is in contact with the shaft, resulting in relative friction between the two. Contact dynamic seals include packing seals and mechanical seals.

igus seal operation

1) If there is slight leakage 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 operating pressure of the pump 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 surface. 3) Regularly check the sealing condition. During operation, if the leakage exceeds the standard, heavy oil should not exceed 5 drops/min, and light oil should not exceed 10 drops/min. If there is no improvement within 2-3 days, stop the pump to inspect the sealing device.

igus seal functions and applications

Engine: Crankshaft - front and rear crankshaft oil seals; Valve - valve oil seals (engine repair kit o O-rings) (distributor oil seal, water pump oil seal, balance shaft oil seal, oil pump oil seal...); Camshaft - camshaft oil seal; Transmission: Transmission - front and rear transmission oil seals; Shift lever oil seal (transmission repair kit o O-rings) (Transfer case - front and rear transfer case oil seals); Rear axle: Half shaft - rear half shaft oil seal; Differential - (front) rear pinion oil seal; Rear wheel oil seal; Front wheel oil seal; Steering gear oil seal (steering gear repair kit o O-rings); Power steering booster oil seal (front half shaft oil seal). Any part inside a rotating housing that contains liquid lubricating oil and connects to the exterior requires an oil seal. Some are made of rubber, some of metal, and most are steel-reinforced rubber, such as rear crankshaft oil seals, front and rear transmission oil seals, left and right half shaft oil seals, front main reducer oil seals, and compressor crankshaft oil seals.

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