Hydraulic shaft seals must withstand system pressure while preventing fluid leakage. The acceptable pressure range varies depending on seal design and material.
Typical operating pressure ranges include:
Low pressure systems: below 5 bar
Medium pressure systems: 5–20 bar
High pressure hydraulic equipment: above 20 bar
Factors influencing pressure tolerance:
Seal material and reinforcement
Rotational speed of the shaft
Hydraulic fluid viscosity
Selecting seals designed for the appropriate pressure range ensures stable sealing performance and longer service life.
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