Explore All About Industrial Oil Seals
Oil seals, also known as oil lip seals, dirt seals, grease seals, shaft seals, or rotary seals, are used to fill the gaps between stationary and revolving parts of the equipment. They are designed to prevent the leakage of fluids from the machinery and inhibit contaminants from reaching these fluids. They contribute to the longevity and reliability of the equipment like engines and gearboxes in industrial equipment. This post discusses the importance of oil seals, the different types of materials that are used in the manufacturing of
Oil seals, also known as oil lip seals, dirt seals, grease seals, shaft seals, or rotary seals, are used to fill the gaps between stationary and revolving parts of the equipment. They are designed to prevent the leakage of fluids from the machinery and inhibit contaminants from reaching these fluids. They contribute to the longevity and reliability of the equipment like engines and gearboxes in industrial equipment. This post discusses the importance of oil seals, the different types of materials that are used in the manufacturing of oil seals and many more.
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Overview of Oil Lip Seals
Oil seals are used to fill gaps between stationary and revolving parts of equipment, often known as radial shaft seals or rotary seals. These seals are frequently employed to keep impurities out and prevent lubricating oils, hydraulic fluids, or other liquids from escaping out of the system. An oil seal features:
- Outside Metal Ring: The seal's outside metal casing helps in maintaining its shape and offers structural support.
- Rubber or Elastomeric Sealing Lip: The sealing lip typically encloses the shaft in a tight seal formed of rubber or elastomeric material.
- Spring: Some oil lip seals incorporate a spring to apply constant pressure against the shaft, ensuring a secure seal.
Types of Materials Used for Manufacturing Oil Seals
Oil lip seals play a significant role in several industrial applications to avoid intermixing fluids and prevent contaminants and moisture from affecting the bearings. With such a vital role to play, it is essential to choose the right material for these seals. The choice of the material will depend on factors like the type of fluid being sealed, operating temperature, pressure, and compatibility with the operating environment. The following list of materials is typical for making oil lip seals:
- Nitrile (NBR): The nitrile rubber or nitrile provides excellent resistance to numerous oils and greases, including mineral grease and hydraulic oil. There are several synthetic lubricants and greases in the market based on glycol which may cause harm to NBR rubber compounds depending on their composition. Due to their excellent durability and cost-effectiveness, these seals are used in a wide range of operating conditions. However, NBR is unable to withstand exposure to acids and solvents.
- Polytetrafluoroethylene (PTFE): This fluoropolymer is known by the brand name Teflon and is known to assure the best chemical resistance and exceptionally little frictional resistance. It is the material of choice for several types of rotating seals used in the chemical, food, and pharmaceutical industries.
- Polyurethane (PU): Polyurethane seals offer excellent abrasion resistance and durability. They are suitable for high-pressure applications and provide good resistance to hydraulic oils. Polyurethane oil seals are often used in hydraulic and pneumatic systems.
- Viton: The exceptional resilience of Viton against chemicals, strong fluids, and high temperatures is well recognized and makes this a great material for creating seals for demanding applications. This material is known to maintain its flexibility, strength, and shape even in the harshest situations. When designers and engineers use oil lip seals for industry made of Viton material, their durability and dependability guarantee reduced downtime, improved performance, and a competitive advantage. It works effectively in applications involving severe chemicals, synthetic oils, and fuels.
- Ethylene Propylene Diene Rubber: This elastomer is used for creating oil lip seals for industry and other sealing elements such as U-cups. The oil lip seals made of this material would exhibit excellent resistance to steam, hot water, washing agents, and polar organic solvents. They are used to seal phosphate ester hydraulic fluids, such as Skydrol. These seals are not recommended for petroleum-based fluids, and can be effectively used with acetone, steam, alkalies, and dilute acids.
Although oil seals have been around for a while, choosing the right one still needs careful planning. If you are sure about the type of seal needed for your application or looking to replace your current seals with custom oil seals that meet your application requirements, then do not hesitate to contact the experts at SSP Seals &#; a leading industrial seal manufacturer in the USA. The company offers one of the most comprehensive selections of oil seals in the USA in a wide range of materials and profiles such as Type A Single Lip, Type ADL Double Lip, Type AO Single Lip, Type AODL Double Lip, Type B Single Lip Metal Case w/Spring, Type BDL Double Lip, and many more. You can visit the website for more information.
Related Post
Oil seals may be a small and unobtrusive component, but their role should not be understated. Also known as rotary shaft seals, oil seals are designed to close even the most marginal spaces between stationary and moving components in mechanical equipment to prevent lubricants from seeping out.
In this article, we&#;ll explain four key benefits of using oil seals in your equipment and why it is imperative that worn seals are promptly replaced.
1. Preventing Leakage, Protecting Machinery
A key function of oil seals is to prevent the leakage of lubricants which are essential for the smooth operation of machinery by reducing friction and wear between moving parts. When oil seals are properly installed, they ensure that the lubricant remains inside the machinery and prevents leakage onto the floor or into the environment. As well as conserving lubricant supplies, this ensures that the machinery operates at optimum efficiency and that sensitive moving components aren&#;t severely damaged by excessive friction. Preventing leakage also offers important environmental benefits, reducing the risk of contamination through spillage.
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2. Preventing Contamination
Oil seals are crucial in protecting components within machinery from external contaminants, such as dust, dirt, and moisture, which can cause corrosion, wear, and ultimately, premature failure. By effectively sealing the internal components from the external environment, oil seals extend the lifespan of these vital parts and reduce downtime and maintenance costs in the long-term. Protection is especially important in harsh or dirty working environments where the risk of contamination is high.
3. Enhancing Efficiency
The use of properly installed oil seals significantly improves the efficiency of machinery. By reducing friction and wear within the system, they ensure machinery can operate more smoothly and with less energy consumption. Reduced friction also means less heat generation, which is beneficial for maintaining the optimum temperature of the equipment. As well as achieving much-needed cost savings in terms of reduced energy use, oil seals enhance overall productivity as there are fewer periods of downtime or maintenance.
4. Prolonging Machinery Life
Finally, by minimising wear and tear, oil seals contribute significantly to extending the lifespan of essential machine components, such as bearings and shafts. Consequently, reduced downtime is likely as there are fewer breakdowns and maintenance requirements, translating into cost savings and more consistent production output.
Download Our Free Guide
Replacing degraded oil seals is the best way to seal a leaking oil tank so, to find out more about our oil seals and the benefits for your industrial applications, please download our free guide or call us on to speak to an expert.
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