Rotary shaft seals are the more formal name for this type of seal; however, we also know them as oil, grease, fluid, or dirt seals.
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Whatever you call them however, they all perform the same function – to close the space between stationary and moving parts in machinery and specific equipment and applications.
Of course, the primary aim of seals and gaskets is to prevent various types and volumes of liquids and gases from escaping as well as stopping potentially harmful elements from getting into equipment and machinery, having disastrous consequences.
Rotary-shaft seals are no exception.
A required component in almost all types of vehicles and heavy-duty machinery, this type of seal also prevents leaks from occurring on precision bearings, making them suitable for sealing fluids on various speeds of rotating shafts.
Rotary shafts are the optimal choice for machinery as this particular type of seal prevents abrasives, corrosive moisture, and other harmful substances from getting into the mechanics and causing further complications.
What’s more, they can also prevent lubricating oil and water from mixing, which can be a significant benefit.
The manufacturing process for the creation of rotary shaft seals involves vulcanising an elastomer (the most common elastomer in this type of seal is Nitrile; however, other rubber forms such as Viton, silicone, and EPDM are also available) to a metal ring, with tension behind the sealing lip.
Due to the makeup of this type of seal, you will find various designs of rotary shaft seals available (make sure to check out our post on Oil Seal Types).
As previously mentioned, rotary seals are most commonly found in vehicles and machinery, making them an everyday component for those operating in the automotive, manufacturing, and highway industries.
Suitable for specific applications such as:
A word of caution: sealing can be affected by numerous factors, including shaft rotational direction and speed, operating temperature, application hardware, external elements and exposure, operating pressure, etc.
This makes it essential that you choose the right profile to achieve the best outcome, ensuring your rotary shaft seal functions at its most optimal level, preventing leaks, and extending the lifespan of the application.
As one of the most popular sealing products, oil seals are the most popular in the market. Suitable for use on numerous applications and machinery, this type of seal comes in a standard design that includes a sealing lip with an outer jacket and a metal insert.
Other types of rotary shaft seals you may come across include:
Fabric seals – this type of rotary shaft seal goes slightly further than the standard design to support heavy-duty appliances and equipment. This makes this type of seal extremely robust, with a rubber sealing lip and an outer rubber jacket with a fabric reinforcement. The dimensions and properties of fabric seals differ considerably from standard oil seals, and you should bear this in mind when choosing the correct seal and gasket for your application.
Cassette seals – when the shaft or bearing is exposed to extreme contamination, a cassette seal is your best option. Found on wheel axles, tractors, construction, and agricultural vehicles, cassette seals have many sealing lips (single and double) to help provide the right level of protection against external influences.
PTFE lip seals – identical to standard oil seals in their design and function but made of different materials, this seal has a metal housing containing a PTFE sealing lip. Due to its makeup, this seal is highly resistant to high temperatures and high rotational speeds. It is also self-lubricating, making it suitable for dry-running applications – a popular choice for the food industry.
V rings and alpha seals – this type of seal is often used alongside oil seals to provide additional protection from dust and dirt as it contains a double lip. The seal itself is made from rubber, with the housing often manufactured from stainless steel. Double lip seals are used as an added line of defence against all forms of contamination, with various sizes and designs available to suit varying shaft spaces.
Shaft repair sleeves – not a permanent sealing solution, but one that can save you time and expense in the short term. We use shaft repair sleeves when overhauling the entire shaft is simply not a viable option. In these instances, the sleeve slides over the existing shaft, allowing it to continue to function to a high degree.
From standard rotary shaft seals to custom-made oil seals, our team is on hand to help you with all of your sealing requirements.
The company is the world’s best high speed rotary shaft seals supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
Fill in our contact form with further information, and we’ll find the most suitable solution for your application.
In the realm of high-performance machinery, the efficiency and reliability of sealing solutions are paramount. Among the various types of seals available, PTFE (Polytetrafluoroethylene) Rotary Shaft Seals stand out due to their superior performance characteristics. At Advanced EMC Technologies, we specialize in delivering top-tier PTFE Rotary Shaft Seals that cater to the rigorous demands of high-performance machinery. In this article, we explore why these seals are indispensable for achieving optimal machinery performance.
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The superior performance characteristics of PTFE Rotary Shaft Seals make them essential for a variety of high-performance applications, including:
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Advanced EMC Technologies utilizes a specialized molding process to achieve radial contact pressure in PTFE Rotary Shaft Seals. An O-Ring is incorporated as an internal seal to prevent leakage and enhance internal tightness. Our commitment to using high-quality materials ensures that each seal meets the highest standards of performance and durability.
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We understand that each application has unique requirements. Our expertise in designing and manufacturing customized PTFE Rotary Shaft Seals ensures that we can provide tailored solutions that meet the specific needs of your high-performance machinery.
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For applications requiring higher peripheral speeds and tighter sealing, we offer hydrodynamic return feed in the PTFE lip or on the running surface. Our specially designed lip seals or running sleeves with precision-ground surfaces are ideal for these demanding applications.
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Our PTFE Rotary Shaft Seals are engineered to deliver reliable performance across various industries, ensuring that your machinery operates at peak efficiency with minimal downtime.
In conclusion, PTFE Rotary Shaft Seals from Advanced EMC Technologies are essential for high-performance machinery due to their superior chemical resistance, wide temperature range, high-speed capability, pressure stability, and customizable designs. Their versatility and reliability make them the preferred choice for industries that demand top-tier sealing solutions.
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If you found this information helpful, consider sharing it with your network. For more insights into our advanced sealing solutions and to discuss how we can meet your specific needs, don’t hesitate to reach out. Together, we can ensure your systems operate at peak efficiency with the most reliable sealing solutions available.
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Feel free to contact Advanced EMC Technologies for more details or to request a customized solution for your application.
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