Pressure oil seal: page 10
Sealing rings are special types of sealing elements that can operate under high-pressure conditions, beyond those in which standard seals fail to provide an effective seal. They are used in hydraulic pumps, hydraulic motors, gearboxes and other machine units with relatively variable internal pressures. Their special design allows them to maintain a tight seal with the shaft even at high pressures, thereby preventing any leakage of oil or technical fluid. Seals available in stock for fast delivery in Romania from the Hydraulic Seals Shop: NBR, FKM and many other materials.
What are pressure seals and when are they required?
Pressure seals are used when the internal pressure of the housing exceeds the limits for which standard seals are designed. See also the complementary types: V, AS and SB-TB seals for specific applications.
The role of pressure seals
Sealing in high-pressure systems
High pressure tends to lift the standard seal off the shaft, which would lead to leaks. Axial seals are designed to counteract this tendency and maintain a tight seal against the shaft even at high pressures. Gear pumps, axial and radial hydraulic motors, and other high-pressure internal equipment cannot function without these components.
Protection against oil or technical fluid leaks Oil leaking from a faulty seal leads to environmental contamination, low oil levels and damage to bearings or other parts. Good thrust seals prevent all of these issues; they therefore reduce the maintenance costs of the equipment and also minimise the risk of failure.
How to choose pressure seals
When selecting a pressure seal, check the shaft diameter, the outer diameter of the housing, the width, the maximum working pressure, the operating temperature and the type of fluid. The lip material (NBR for mineral oils, FKM for high temperatures or aggressive fluids) is a key criterion.
The benefits of buying pressure seals from the Hydraulic Seals Store
Hydraulic Seals Store offers pressure seals from stock at all times, in various sizes and materials, at competitive prices, with fast delivery across Romania. Our team is on hand to provide technical assistance in selecting the right product. Buy high-quality pressure seals at great value, directly from our catalogue.
Frequently Asked Questions
What are pressure seals?
Pressure seals are special sealing elements for rotating shafts, designed to operate under high-pressure conditions where standard seals no longer provide an effective seal.
Where are pressure seals used?
Pressure seals are used in hydraulic pumps, hydraulic motors, transmissions and other systems where the internal pressure within the housing is high.
How do I choose the right pressure seals?
Select the pressure seal based on the shaft diameter, maximum working pressure, operating temperature and type of fluid. The lip material should be chosen based on its compatibility with the oil or fluid being used.
What dimensions are important for pressure seals?
The essential dimensions are the internal diameter (of the shaft), the external diameter (of the housing bore) and the width of the seal. All must correspond exactly to the equipment’s specifications.