High quality rod seals manufacturer and supplier: A basic mechanical seal contains three sealing points. The stationary part of the seal is fitted to the pump housing with a static seal –this may be sealed with an o-ring or gasket clamped between the stationary part and the pump housing. Rotating and Stationary parts of a Seal – The rotary portion of the seal is sealed onto the shaft usually with an O ring. This sealing point can also be regarded as static as this part of the seal rotates with the shaft. The mechanical seal itself is the interface between the static and rotary portions of the seal. One part of the seal, either to static or rotary portion, is always resiliently mounted and spring loaded to accommodate any small shaft deflections, shaft movement due to bearing tolerances and out-of-perpendicular alignment due to manufacturing tolerances. Read extra details at o ring manufacturers.
Mechanical seals are engineered for most pumps, mixer and agitator applications in maintenance. In many cases the designs have been proven to be workhorses over years of use. In others seals must be designed for evolving industrial demands. The basic rotating face mechanical seal design is adaptable to serve a wide range of sealing applications including compressors. Standard mechanical seals can suit most requirements to temperatures of 500 degrees F and shaft speeds to 3600 RPM. The selection of secondary seal type often determines the temperature and chemical capabilities of the seal. The combination of materials used in the rotating and stationary faces define the abrasive resistance, and chemical resistance. Seal face combinations will also determine the amount of energy consumed by the pump, mixer, agitator or compressor. Seal faces can be balanced to permit higher pressure sealing. Balanced seals can seal pressures above 200 psi, or used in a multiple stages for higher pressures or especially severe fluid services. Special mechanical seals can be furnished to meet the most demanding of industrial applications considering pressure, temperature, speed or fluid.
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 seal, which is also called shaft seal, is noted for a reasonable compression and stretch rate to achieve a good sealing effect. It will not leak when it is sealed statically. At the same time, the O-ring size is properly matched to the groove size. The structure is simple and its installation is very close to the machine. Its most prominent advantage is its self-sealing effect, eliminating the need for periodic adjustments. We guarantee that the size and mounting grooves of all our O-rings are standardized, so they are cost-effective and easy to maintain. They have low frictional resistance and are suitable for occasions where the pressure is often alternating.
DMS SEALS’ s bonded seal is ideal for being applied to threaded pipe fittings and plug sealing in Metric, British and BSP systems. The seal has no special requirements for the positioning and processing techniques of the seal groove, so it is an ideal accessory for fast and automatic installation that we highly recommend. The operating temperature range is -30°C ~ 100°C, and the working pressure is less than 39.2 MPa. It is commonly used in a hydraulic oil medium.
The rod seals can be operated with or without lubrication. We guarantee strong dimensional stability and a low coefficient of friction. Changes in temperature do not affect its performance. It is easy to install and can be used with piston rods with the larger diameter and heavy-duty hydraulic rod sealing systems to provide a tight and excellent seal. DMS Seals with 12+ years of experience for manufacturing rod seals, we are confident to provide top quality & satisfying product. There are hydraulic rod seals, piston rod seals, etc for selection, welcome to contact us for further details.
Diffusion leakage: Driven by the concentration difference, the medium leaks through the material transfer generated by the sealing gap or the capillary of the sealing material. Diffusion is the result of molecular motion and is not unidirectional. When the sealing pressure difference is extremely small or in a vacuum state, or when sealing permeable substances such as nitrogen and hydrogen, as well as highly toxic and radioactive substances, special attention should be paid to the leakage and diffusion.
Support and positioning The piston and piston rod are radially supported and positioned in the cylinder barrel. Isolate the two pairs of motion pairs of piston and cylinder, piston rod and guide sleeve to prevent direct scratches, abrasions and strains between the motion pairs. Especially when the motion pairs are all steel parts, they must be isolated, otherwise they will be easily strained. The guide belt also has an important role to reduce the friction and friction work between the moving parts, reduce the ineffective work and heat. Vibration absorption and noise reduction Reduce system vibration and noise. It is mainly filled with tetrafluoroethylene and phenolic cloth, and there are also a very small amount of polyoxymethylene, nylon and soft metal. See additional details at https://www.dmsseals.com/.
DMS Seals is a scientific and technical mechanical seal manufacturer and oil seal supplier specializing in seal production, sealing material development, and the conception of sealing solutions for special working conditions. We have 120 employees, including 70 senior technicians. DMS Seals has a number of invention patents and leading production processes. The R&D team is able to design and develop Rubber Seal & Hydraulic Seals for various mechanical sealing systems under complex conditions. We have already passed the certification of ISO 9001 and TS 16949.