Germany glogar seals glogar model glogar price

glogar 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. According to working pressure, static seals can be further divided into medium and low-pressure static seals and high-pressure static seals. Medium and 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 as contact seals and non-contact seals based on whether the seal contacts the components moving relative to it; 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 energy to the medium during machine operation, so they are sometimes called hydrodynamic seals.

glogar seal principle

A mechanical seal is a shaft sealing device that prevents leakage by maintaining contact between one or several pairs of faces perpendicular to the shaft and sliding relative to each other, under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism, supplemented by auxiliary seals. A typical mechanical seal structure consists of a stationary ring (static ring), a rotating ring (dynamic ring), an elastic element spring seat, set screws, a rotating ring auxiliary O-ring, and a stationary ring auxiliary O-ring. An anti-rotation pin is fixed to the gland to prevent the stationary ring from rotating. The rotating ring and stationary ring can also be referred to as compensation rings or non-compensation rings depending on whether they have axial compensation capability.

glogar seal system composition

1) Gland housing: In the past, gland housings used for mechanical seals were stuffing boxes designed for soft packing seals. They are unsuitable for mechanical seals, not only because they are too small and have too narrow clearances, but also because their simple cylindrical shape is inappropriate. Standards for enlarged gland housings for mechanical seals have been established abroad. In addition, Durametallic Corporation in the United States and the Fluid Sealing Association (formerly the British Hydromechanics Research Group) are studying rational gland housings for mechanical seals. Their shapes should not only facilitate fluid flow and heat dissipation but also help remove solid particles, creating a favorable environment for the seal. 2) Volatile emission control system: In the past, attention was focused only on eliminating visible fluid leaks, while neglecting the control of invisible volatile emissions. This has led to environmental pollution and poses risks to equipment and personnel. Organizations abroad, such as the Sealing Technology Committee of the Society of Tribologists and Lubrication Engineers (STLE) in the United States, have developed guidelines for controlling volatile emissions from rotating machinery, compressors, and screw systems equipped with mechanical seals, including SP-30 (1994), SP-32 (1990), and SP-33 (1991). SP-30 is implemented in three stages. It clearly defines barrier fluids and buffer fluids, clarifying erroneous and confusing concepts. A barrier fluid is introduced between dual seals to completely block process fluid from leaking into the surrounding environment. The pressure of the barrier fluid is always higher than the pressure of the sealed process fluid. A buffer fluid is used between dual seals as a lubricant or buffer; its pressure is always lower than the pressure of the sealed process fluid. 3) Supporting systems for auxiliary systems: Auxiliary systems for mechanical seals require supporting components for cooling, heating, flushing, and other functions. Pump circulation needs to be optimized, and issues such as condition monitoring systems are being studied and resolved. The supporting requirements for auxiliary systems are specified in the API-682 standard. 4) Gas barrier seal system: In the past, barrier seal systems commonly used liquid-to-liquid or liquid-to-gas blocking. To simplify bulky barrier liquid systems, barrier gases are now used to block liquids or gases. In gas barrier seal systems, spiral groove gas seals with barrier gas, floating bushings with barrier gas, and other configurations can be employed to block gases and liquids.

glogar seal precautions

1) Shaft speed: Due to design and structural reasons, high-speed shafts should use high-speed oil seals, and low-speed shafts should use low-speed oil seals. Low-speed oil seals must not be used on high-speed shafts, and vice versa. 2) Ambient temperature: In cases of higher operating temperatures, polyacrylate or silicone, fluorine, or silicofluorine rubber should be selected. Measures should be taken to reduce the oil temperature in the oil tank. In cases of lower operating temperatures, cold-resistant rubber should be selected. (3) Pressure: General oil seals have poor pressure resistance; excessive pressure will cause the oil seal to deform. Under conditions of excessive pressure, pressure-resistant support rings or reinforced pressure-resistant oil seals should be used. 4) Installation eccentricity: If the eccentricity is too large when the oil seal fits with the shaft, its sealing performance will deteriorate, especially at high shaft speeds. If the eccentricity is too large, oil seals with a "W" shaped cross-section can be used. 5) Shaft surface finish directly affects the service life of the oil seal; that is, the higher the shaft surface finish, the longer the oil seal service life. 6) Ensure there is a certain amount of lubricating oil at the lip of the oil seal. 7) Pay special attention to preventing dust from entering the oil seal.

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