German Sterling SAT seals, Sterling SAT models, Sterling SAT prices

Sterling SAT seals can be divided into two main categories: static seals and dynamic seals. Static seals mainly include three types: gasket seals, sealant seals, and direct contact seals. Based on working pressure, static seals can be further divided into medium-to-low pressure static seals and high-pressure static seals. Medium-to-low pressure static seals commonly use gasket seals made of softer materials with wider widths, while high-pressure static seals use metal gaskets made of harder materials with very narrow contact widths. Dynamic seals can be divided into two basic types: rotary seals and reciprocating seals. Others are classified based on whether the seal contacts the components moving relative to it, into contact seals and non-contact seals; based on the seal and contact position, they can be divided into circumferential seals and face seals, with face seals also known as mechanical seals. Centrifugal seals and spiral seals in dynamic seals achieve sealing by imparting kinetic energy to the medium during machine operation, hence they are sometimes referred to as hydrodynamic seals.

Sterling SAT Seal Classification

Oil seals are generally divided into single-piece types and assembled types. The assembled type allows free combination of the cage and lip material, generally used for special oil seals. Oil seals can be categorized into various forms and names based on their sealing function, characteristics, structural type, operating state, and sealing mechanism. However, conventionally, rotary shaft lip seals are referred to as oil seals, while seals used for static sealing and dynamic sealing (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 encapsulated in rubber. The term 'oil seal' commonly refers to this type of tc cased oil seal.

Sterling SAT Seal Materials

Common materials for oil seals include: Nitrile Rubber, Fluoroelastomer, Silicone Rubber, Acrylate Rubber, Polyurethane, Polytetrafluoroethylene, etc. 1) Nitrile Rubber (NBR): It has good heat and wear resistance, resists various lubricating oils, greases, oil-gas mixtures, etc. Applicable temperature range: -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): Superior oil and heat resistance, wear resistance, ozone resistance, and UV radiation resistance. Especially resistant to lubricating oils, gear oils, motor oils, engine oils, and petroleum-based hydraulic fluids containing extreme pressure agents. Suitable for working temperatures in the range of -30~150 degrees Celsius. 3) Fluoroelastomer: Resistant to aging, heat, and oil. Suitable for almost all lubricating oils, fuel oils, and gasoline. It does not harden easily in oils containing extreme pressure additives. However, it has poor cold resistance and high-temperature wear resistance, and significant permanent compression set. Suitable for temperatures from -20~250 degrees Celsius. 4) Silicone Rubber: Has outstanding high and low-temperature resistance. Can be used long-term at 150 degrees Celsius without performance change; can be used continuously at 200 for 10000h. Maintains its unique elasticity, ozone resistance, and weather resistance in the working temperature range of -70~260 degrees Celsius. 5) Polytetrafluoroethylene: Has outstanding chemical stability, thermal stability, low friction, and self-lubricating properties. 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 fluoroelastomer 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, making leakage 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 lip temperature of an oil seal 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: Nitrile Rubber (NBR) is -40~120℃, Acrylate Rubber (ACM) is -30~180℃, and Fluoroelastomer (FPM) is -25~300℃.

Sterling SAT Seal Installation Precautions

1) During installation, pay close attention to avoid installation deviations. Tighten the gland after aligning the coupling. Bolts should be tightened evenly to prevent tilting of the gland face. Check all points with a feeler gauge; the error should not exceed 0.05 mm. Check the fit clearance (i.e., concentricity) between the gland and the outer diameter of the shaft or shaft sleeve. It should be uniform around the circumference. Use a feeler gauge to check all points; the allowable error should not exceed 0.01 mm. 2) Spring compression must be performed according to regulations. Excessive or insufficient compression is not allowed. The required error is 2.00 mm. Excessive compression increases face specific pressure, accelerating face wear. Insufficient compression results in inadequate specific pressure, failing to achieve sealing. 3) After installing the rotating ring, press it against the spring; it should automatically spring back. 4) Installation position requirements: To ensure stable operation, long service life, and low leakage performance of the mechanical seal, correct installation on the machine is crucial. When installing the mechanical seal on the machine, compare it carefully with the general assembly drawing before installation to confirm that all parts are ready. Pay attention to any abnormalities such as scratches or damage on the sealing faces of the friction pair and sealing rings. Also check for scratches on the surfaces of the shaft or shaft sleeve contacting the packing and sealing rings (O rings), flanges, and other components. If any abnormalities are found, replace or repair them before use. During actual installation, do not bring more parts than needed to the site. If there are leftover parts after installation, it indicates missing installations; if parts are insufficient, it means unnecessary parts were assembled, thus serving as a self-check during installation.

Weidou Intelligent Technology professionally sells German Sterling SAT seals, Sterling SAT sealing rings, Sterling SAT sealing strips, Sterling SAT pipe seals, Sterling SAT cable seals, Sterling SAT rubber seals, Sterling SAT mechanical seals, Sterling SAT gaskets, Sterling SAT oil seals, Sterling SAT shaft seals, Sterling SAT metal seals, Sterling SAT high-pressure seals, Sterling SAT spiral seals, Sterling SAT centrifugal seals, Sterling SAT sealing rings. Sterling SAT original imports from Germany. Welcome customers to inquire and order.