German ais seals ais model ais price

ais 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.

ais 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 divided into various forms and have different names based on their sealing function, characteristics, structural type, working condition, and sealing mechanism. However, conventionally, rotating shaft lip seals are called oil seals, while sealing elements used 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.

ais seal materials

Common materials for oil seals include: nitrile rubber, fluororubber, silicone rubber, acrylic rubber, polyurethane, polytetrafluoroethylene, etc. 1) Nitrile rubber (NBR): It has good heat resistance 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 oils and 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 oils containing extreme pressure agents. It is suitable for operation in the -30~150 degrees Celsius range. 3) Fluororubber: 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 deformation. 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 fluororubber are widely used materials for oil seals. The former is low-cost, but the latter offers significant improvements in temperature resistance and sealing performance. However, the latter is more expensive and still retains some common disadvantages of ordinary rubber materials, such as poor wear resistance, short service life, and high sensitivity to shaft eccentricity. Leakage phenomena are still 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 compatibility of the material with the working medium, adaptability to the working temperature range, and the ability of the lip edge to follow the high-speed rotation of the shaft. Generally, the temperature of the lip edge during oil seal operation is 20~50℃ higher than the working medium temperature, which should be noted when selecting oil seal materials. The working 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 fluororubber (FPM), it is -25~300℃.

ais seal failure causes

Mechanical seal failures are generally identified only after abnormal leakage, abnormal wear, or abnormal torque occur. The causes of failure can be broadly categorized into four aspects: 1) Incorrect design or selection of the mechanical seal; 2) Poor quality of the mechanical seal; 3) The precision of the machine using or installing the mechanical seal does not meet requirements; 4) Incorrect machine operation.

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