O ring factory today: Mechanical seals form a critical part of any mechanical operation involving fluid movement through rotational shafts, such as in the case of pumps. These seals ensure that the fluid does not leak out of a closed system and contaminants do not enter the system. In pumping applications, mechanical seals are placed at the point of entry or exit of a rotating shaft, preventing the pressurized fluid from escaping the pump housing and withstanding the friction generated from the shaft rotations. Read on to learn how mechanical seals work and explore some popular use cases of seals in pump applications. Discover additional info at spring seals.
Before examining how mechanical seals function it is important to understand other methods of forming this seal. One such method still widely used is Gland Packing. Gland packing is a braided, rope like material that is packed around the shaft – physically stuffing the gap between the shaft and the pump housing. Gland packing is still commonly used in many applications, however increasingly users are adopting mechanical seals for the following reasons; The friction of the shaft rotating wears away at the packing over time, which leads to increased leakage until the packing is adjusted or re-packed. The friction of the shaft also means that packing also needs to be flushed with large volumes of water in order to keep it cool. Packing needs to press against the shaft in order to reduce leakage – this means that the pump needs more drive power to turn the shaft, wasting energy. Because packing needs to contact the shaft it will eventually wear a groove into it, which can be costly to repair or replace.
Sealing performance over conventional O-rings is achieved by reducing particle generation, extending seal life and minimizing replacement time during preventive maintenance. Compared to traditional O-rings, this seal effectively reduces the number of dust particles generated during operation and extends the life of the machine with bonded seals installed. The seal has a working diameter range of 6.5 to 60.58mm.
Since the scraper seal is made of the special material, PTFE, it has an impurity immersion function. Therefore, when combined with the piston rod seal and the metal bushing, it can prevent damage to the piston rod and prevent the accumulation of oil pressure. It has a diameter range of 3-1600mm and a temperature range of -30°C + 200°C. The wiper scraper seal can operate at speeds of up to 5 m/s. It has high wear resistance, tear resistance, low-temperature resistance and good strength. Our wiper seals can be used in combination with piston seals and anti-wear rings to prevent oil in the cylinder from being mixed with foreign matter, which causes damage to the working seal. It is especially suitable for piston rods with a large diameter. Moreover, it has a wide range of applications, such as agricultural machinery, injection moulding machines, forklifts, cranes and so on.
Leakage of gaskets: There are four types of leakage phenomenon in general gaskets: interface leakage, penetration leakage, diffusion leakage, and damage leakage. Interface leaks: The interface will leak at the sealing interface due to insufficient gasket compression, improper flange joint surface finish, and flange deformation. For interface leakage, it can be prevented by using soft gasket to clamp in the flange face. Penetration leakage: Since most of the soft materials are made of fibers, they are easily soaked by the medium, especially the pressure. Due to capillary phenomenon, the medium will permeate to the low pressure side, forming permeation.
DMS SEALS is a technology enterprise which specialized in the production of seals, the development of seals material and the solution of the sealing of special working condition. We own 120 staffs which including 70 middle and senior technicians. Our factory covers more than 10000 square meters which including 8000 square meters for the workshop. Our production equipment and test equipment are on leading level in the same industry. We are the one of the biggest enterprise who specialized in manufacturing and developing seals in China. We have long time cooperation and communication with many universities and research institutions at home and board. Read even more information at https://www.dmsseals.com/.
DMS Seals is a professional mechanical seals manufacturer and oil seal supplier for hydraulic seals, O-Rings, spring energized seals, oil seals, mechanical seal and so on. Hydraulic seals including step seals, glyd rings, guide strips, wiper seals, rod seals, piston seals, rotary seals, wear rings. We can provide the hydraulic seals with bronze filled PTFE, carbon filled PTFE, graphite filled PTFE, MoS2 filled PTFE, glass filled PTFE, virgin PTFE. About O-Rings, we can supply NBR, FKM, silicone, EPDM, HNBR, ACM, FFKM material.
Due to the volume and weight limitations of the system, it is impossible to install an ideal filtration and cooling system. High temperature, high pressure, and high speed cause the hydraulic oil to deteriorate easily, and the mechanical parts are also prone to erosion and stains. There are many stains and impurities in hydraulic oil, but it cannot be thoroughly filtered, which is the aspect of endogenous stains. All kinds of dust in the working environment may be very large, and it will inevitably enter the hydraulic system in multiple ways, causing oil pollution, which is an external stain. Therefore, the sealing system is required to be resistant to stains.
The O-ring of DMS SEALS is often used in hydraulic and pneumatic transmission systems and has wide applications. It can be used for both static and reciprocating seals. Moreover, it can also be used in rotary sealing systems. The O-ring can be installed in a groove with a rectangular cross section on the outer or inner circle, achieving a good sealing effect. It has many advantages compared with other types of sealing rings. Its compact structure makes it easy to assemble and disassemble. Moreover, its dynamic frictional resistance is relatively small, and a single piece of O-ring can achieve sealing performance in both directions.