German Innomatec seals Innomatec models Innomatec prices

Innomatec seals are sealing devices installed to prevent leakage between the pump shaft and the housing. Common shaft seal types 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.

Innomatec seal classification

Oil seals are generally divided into single-piece types and assembled types. The assembled type allows free combination of the skeleton and lip material, and is generally used for special oil seals. Oil seals can be classified into various forms and names based on their sealing function, characteristics, structural type, operating state, and sealing mechanism. However, conventionally, rotating shaft lip seals are called oil seals, while sealing elements for static seals and dynamic seals (generally reciprocating motion) are called 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 covered by rubber. The term oil seal commonly refers to this type of tc skeleton oil seal.

Innomatec seal materials

Common materials for oil seals include: Nitrile rubber, Fluorocarbon rubber, Silicone rubber, Acrylate rubber, Polyurethane, Polytetrafluoroethylene, etc. 1) Nitrile rubber (NBR): It has good heat and wear resistance, and is resistant to various lubricating oils, greases, and oil-gas mixtures. The applicable temperature range is -30~120 degrees Celsius. However, it cannot be used in phosphate ester hydraulic fluids or gear oils containing extreme pressure additives. It performs stably in gasoline and mineral oils with low aniline points. 2) Polyacrylate rubber (ACM): It has superior oil and heat resistance, wear resistance, ozone resistance, and UV radiation resistance. It is especially resistant to lubricating oils, gear oils, motor oils, engine oils, and petroleum-based hydraulic fluids containing extreme pressure agents. It is suitable for operation in the range of -30~150 degrees Celsius. 3) Fluorocarbon rubber: It offers aging resistance, heat resistance, and oil resistance. It is suitable for almost all lubricating oils, fuel oils, and gasoline. It does not harden easily in oils containing extreme pressure additives. However, its cold resistance and high-temperature wear resistance are poor, and it has significant permanent compression set. It is suitable for temperatures from -20~250 degrees Celsius. 4) Silicone rubber: It has outstanding high and low-temperature resistance. It can be used long-term at 150 degrees Celsius without performance change; it can be used continuously at 200 for 10000h. It maintains its unique elasticity, ozone resistance, and weather resistance within the working temperature range of -70~260. 5) Polytetrafluoroethylene: It has outstanding chemical stability, thermal stability, friction reduction, and self-lubrication. Its decomposition temperature is above 400. Therefore, it can work normally in the temperature range of -200~300 degrees Celsius. Except for free fluorine and alkali metals, it has excellent corrosion resistance to chemicals, solvents, hydroxides, and acids. Nitrile rubber and fluorocarbon rubber are widely used oil seal materials. The former is low-cost, but the latter offers significant improvements in temperature resistance and sealing performance, though at a higher cost. It still retains some common disadvantages of ordinary rubber materials, such as poor wear resistance, short service life, and high sensitivity to shaft eccentricity, so leakage phenomena remain relatively common. PTFE oil seals are high-tech products and represent the future direction of oil seal development [2]. When selecting oil seal materials, one must consider the material's compatibility with the working medium, adaptability to the working temperature range, and the lip's ability to follow the rotating shaft at high speeds. Generally, the temperature of the oil seal lip during operation is 20~50℃ higher than the working medium temperature, which should be noted when selecting materials. The operating range of an oil seal depends on the material used: for Nitrile rubber (NBR), it is -40~120℃; for Acrylic rubber (ACM), it is -30~180℃; for Fluorocarbon rubber (FPM), it is -25~300℃.

Innomatec seal troubleshooting

1) Main factors causing oil seal leakage: Poor sealing of the oil seal is the primary factor causing leakage. When the shaft wears and forms grooves, even replacing it with a new oil seal may not achieve proper sealing. This is due to reduced contact pressure between the oil seal lip and the shaft, resulting in insufficient interference fit between the oil seal lip diameter and the shaft diameter after installation. Taking the S195 diesel engine crankshaft oil seal as an example, the main reasons for poor sealing are analyzed as follows: (1) Poor manufacturing quality of the oil seal; (2) Poor quality of the shaft or bearing; (3) Improper use and maintenance; (4) Improper installation; (5) Improper storage, leading to adverse effects from environmental contamination. 2) Countermeasures for leakage due to poor oil seal sealing: Acquire basic knowledge to identify counterfeit and inferior products, and purchase high-quality, standard-compliant oil seals. During installation, if the outer surface roughness of the shaft diameter is low, or if there are defects such as rust spots, corrosion, or burrs, polish it smooth with fine sandpaper or an oil stone. Apply clean engine oil or lubricating grease to the oil seal lip or the corresponding position on the shaft diameter. Apply sealant to the outer ring of the oil seal. Wrap the keyway area on the shaft with hard paper to avoid scratching the oil seal lip. Use special tools to rotate and press the oil seal inward. Never hammer or force it in, to prevent deformation of the oil seal or breakage of the spring, which would cause failure. If lip flipping, spring detachment, or oil seal skewing occurs, it must be removed and reinstalled. Note: Do not arbitrarily tighten the inner spring when the shaft diameter is not worn and the oil seal spring tension is sufficient. Oil seals used in machinery generally operate under harsh conditions, with large ambient temperature differences, abundant dust, and frequent vibration causing constantly changing stress conditions on components. Therefore, frequent inspection, maintenance, and servicing are required. If the shaft diameter and bearing are severely worn, or if the oil seal rubber is aging or the spring has failed, repair and replace the corresponding parts promptly. Troubleshoot abnormal heating in components or assemblies immediately. Avoid overspeeding and overloading the machinery to prevent increased temperature at the oil seal lip, rubber aging, and premature lip wear. Regularly check the engine oil level. If the engine oil contains excessive impurities, such as alloy powder or metal iron filings, completely replace it with new engine oil. The brand and quality of the replacement engine oil must meet seasonal requirements. It is recommended to add Metraile Super Sealant & Lubricant to the engine oil. It is an excellent gearbox additive that forms an inert material film on components. It can reduce oil seal leakage, extend the service life of oil seal gears, and reduce gearbox noise. The use of this Metraile super sealant lubricant will not contaminate or degrade the oil.

Weidou Intelligent Technology specializes in selling German Innomatec seals, Innomatec O-rings, Innomatec sealing strips, Innomatec pipe seals, Innomatec cable seals, Innomatec rubber seals, Innomatec mechanical seals, Innomatec gaskets, Innomatec oil seals, Innomatec shaft seals, Innomatec metal seals, Innomatec high-pressure seals, Innomatec spiral seals, Innomatec centrifugal seals, Innomatec sealing rings, Innomatec original imports from Germany. Customers are welcome to inquire and order.