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Oil seals are generally constructed from materials that can withstand the specific chemical properties of the lubricant they are sealing. Common materials include rubber, silicone, and various elastomers. The design of an oil seal often incorporates a lip that rolls against a shaft or surface, creating a dynamic seal that can accommodate movement while maintaining its sealing capabilities.
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3. Market Demand The demand for hydroxyethyl cellulose is currently on the rise, particularly in industries such as construction, where HEC is used in cement and mortar formulations to improve workability and extend open times. Additionally, the pharmaceutical and personal care sectors are increasingly utilizing HEC for drug delivery systems and as a thickening agent in lotions and creams. As demand grows, prices may experience upward pressure, especially if supply cannot keep pace.
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HPMC possesses excellent film-forming capabilities, allowing it to create flexible and transparent films upon evaporation of the solvent. This property is valuable in coating applications, whether for tablets in the pharmaceutical industry or for food products requiring protective layers. Moreover, HPMC can form gels under certain conditions, making it useful in food and cosmetic products as a thickening agent and stabilizer.
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