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TCN type oil seals work by creating a tight seal between the shaft and the housing of the machinery. This prevents oil or other fluids from leaking out while keeping contaminants from entering the system. The seal is typically made from a flexible material, such as rubber or silicone, that can conform to the shape of the shaft and housing for a secure fit The seal is typically made from a flexible material, such as rubber or silicone, that can conform to the shape of the shaft and housing for a secure fit
The seal is typically made from a flexible material, such as rubber or silicone, that can conform to the shape of the shaft and housing for a secure fit The seal is typically made from a flexible material, such as rubber or silicone, that can conform to the shape of the shaft and housing for a secure fit
tcn type oil seal.


The percentage of hydroxypropyl and methyl substitution in HPMC, often represented as HPMC %, determines its specific properties. A higher HPMC% indicates a higher degree of substitution, leading to enhanced water retention, viscosity, and film-forming abilities A higher HPMC% indicates a higher degree of substitution, leading to enhanced water retention, viscosity, and film-forming abilities
A higher HPMC% indicates a higher degree of substitution, leading to enhanced water retention, viscosity, and film-forming abilities A higher HPMC% indicates a higher degree of substitution, leading to enhanced water retention, viscosity, and film-forming abilities
hpmc structure. Conversely, a lower HPMC% results in a more crystalline structure, providing better stability and shear thinning properties.


The hydroxyethylation reaction involves the substitution of the hydroxyl groups on the cellulose backbone with hydroxyethyl groups. This process is carried out in a controlled manner to ensure that the desired degree of substitution is achieved, which determines the properties of the final HEC product. The reaction is typically carried out under carefully controlled conditions of temperature, pressure, and reaction time.