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2-Ethylhexanoic acid is predominantly utilized as an industrial lubricant and as a hexanoate in the preparation of various esters. Its ability to lower the viscosity of lubricants makes it an essential additive in automotive and machinery applications. Furthermore, the compound acts as a solvent and a precursor for various chemicals and can be used in the manufacturing of plasticizers, which enhance the flexibility and durability of plastics used in consumer goods and construction materials.
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- The choice of rubber for oil seals is crucial due to its unique properties. Rubber's elasticity allows it to conform to irregular surfaces, creating a tight seal even under varying pressures. Its resilience enables it to withstand mechanical stress and resist deformation, ensuring a durable seal over time. Furthermore, certain types of rubber can endure extreme temperatures, chemicals, and abrasion, making them ideal for use in harsh industrial environments.
- In the intricate mechanical symphony that is an automobile, each component plays a pivotal role in ensuring a smooth and safe driving experience. Among these components, the rear shock absorber, often overlooked, stands as a silent guardian against the harsh realities of our roads. Its oil seal, a diminutive yet indispensable part, ensures the integrity of the damping mechanism, preventing oil leaks that could compromise vehicle control and ride comfort.


DIN
The seal shown in Fig. 14.2 is a relatively simple design; most automotive seals are more complex. Dust lips are often used to keep outside contaminants away from the oil lip seals; such seals thus have undercuts that make demolding more difficult. Fluoroelastomer compounds used for such undercut shapes must have reasonably high elongation at break at molding temperatures to avoid tearing the part during demolding. The metal insert is often U-shaped, and stock may be molded to form a thin layer over the outside of the insert. Since both compression and injection molding methods are used, suppliers of fluoroelastomers for shaft-seal applications often must provide different versions of the same polymer composition-medium to high viscosity for compression molding, and low to medium viscosity for injection molding. Different precompounds may be necessary to accommodate relatively long compression-molding times at low temperature and very short injection-molding times at high temperature.
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The simplest way is to know either the preferred manufacturers part number, the overall sizes of shaft diameter, housing diameter and bore depth, or use our brochure to establish the M Barnwell Services ordering reference. Many of the old traditional names of seal manufacturers have either changed or disappeared in this age of “acquisitions”. If no longer available, we will advise you and offer a suitable alternative seal, from stock whenever possible. If your concern is getting the right seals for the job, you will need to know something about the application as well as the overall sizes. If you have any doubts – contact us, we will help in your seal selection.
DIN
If you find a gap, measure it by sliding a feeler gauge under the ruler.
Figure 1: Types of sealing devices


How are Oil Seals made?
Fluid Types - Various oil seals are able to withstand interactions with oils, fuels, grease, water and more. Knowing what type of fluid the rotary shaft seal will be in constant contact with will ensure the longevity of the seal and surrounding components.
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Seals, including oil seals, have undergone a great development in recent years and are totally unlike the original product. PTFE has taken over the oil seals market for modern engines mainly because traditional oil seals started causing more and more problems. Such as evaporation of chemical plasticisers from the elastomeric material, which eventually caused engine oil leakage. Now, the focus is more on durability and frequency of servicing.
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