Electric gear pump seal of the unit is divided into packing seal and mechanical seal.
Electrical unit seal generally depends on the choice of gear pump gear pump used for what working conditions, see more at the following: first, the common electric gear pump units of graphite packing seal is suitable for the temperature less than 150 ℃, lubricity, no corrosion, no solid particles using conditions.
Second, carbon fiber pan-gen sealed gear oil pump is suitable for the temperature does not exceed 250 ℃, lubricity, no corrosion, no solid particles using conditions.
Third, four fluorine sealed gear oil pump is generally used in corrosive, the temperature does not exceed 200 ℃ with lubrication medium is used.
Fourth, the common packing seal electric gear pump unit suitable viscosity will be higher than the application of the mechanical seal viscosity.
Fifth, mechanical seal of electrical gear pump units generally USES static ring graphite material of graphite material, mainly used for conveying a lubricity medium gear pump, the use of low pressure, such as lubricating oil, engine oil, etc.
Sixth, electric gear pump units using graphite to silicon carbide mechanical seal, is mainly used in places that have requirements of lubricity pressure on the high side.
Seventh, electric gear pump unit using the static ring of collar cemented carbide carbide mechanical seal, is mainly used for conveying poor lubricity of medium or medium containing small particles.
Such as heavy oil, residual oil, etc.
Eighth, electric gear pump units in the lubricity of corrosive medium needs to choose for mechanical seal for graphite for silicon carbide or alloy mechanical seal, mechanical seal type O sealing ring in the four fluorine material or para polystyrene material.
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