When shaft rotation is extremely fast, the sealing performance deteriorates. - The spark plug, designated by the unique code 794 000 , is a testament to the precision and innovation that goes into modern automotive technology. This particular model is designed to withstand extreme conditions, delivering a consistent spark for optimal engine performance. The percentage symbol in its name might initially seem perplexing, but it actually represents a coding system used by manufacturers to denote specific features or specifications of the plug.
properties of fuel oil and aromatic solvents. Ordinary requirements can be met and the cost is low.Acrylic rubber and fluorine rubber, fluorosilicone rubber, perfluoro rubber, etc.For bisphenol-cured VDF/HFP/TFE polymers, calcium hydroxide level should be low and magnesium oxide level should be high to promote adhesion to metal inserts. Thermal black or mineral fillers generally give good adhesion.3 For most adhesive systems, it is necessary to limit postcure temperatures to about 200°C (392°F).3
Oil seals are a crucial component in any high-pressure system, serving the important role of preventing leaks and maintaining the integrity of the system. These seals are designed to withstand the high pressures typically found in hydraulic systems, engines, compressors, and other machinery where oil leakage can cause serious damage.
The garter spring is located at the end of the primary sealing lip and used to apply pressure to the sealing lip against the shaft. Common garter spring material types are:
Table 1: The functions of the various components

As shown in Figure 1, sealing devices come in two types: contact and non-contact.
Oil seals are among the major contact type sealing devices.
The sealing process involves the interaction between the rotating shaft and the elastomeric material, resulting in a dynamic barrier that prevents fluid leakage and maintains system integrity.
Types of Oil Seals in Application

Which option is best? This decision is left entirely to you. Whatever solution you choose, the seal needs a proper fit to function.

An oil seal has two tasks: Keeping the lubricant in and keeping dirt and contaminants out of rotating components. This separation must be accomplished between surfaces in relative motion, usually a shaft or bearing inner ring and a housing. With correct installation, oil seals can also prevent seal leakage and maintain the lubricity of a bearing to ensure that the rotary shaft and its bearings remain fully functional.
These are comparable to type R and RST, except the outer case does not have a metal reinforcement ring. To compensate, the outside is not made of normal rubber, but a hard, heavy-duty rubber fabric. The advantage is that these types can be made in a split version. They are almost always produced to order, and made of NBR or FKM.