Oil Seals A
Type A rings are radial shaft seals, used in most applications. Their structure comprises a metal cage and a rubber lip that comes into direct contact with the shaft. Consequently, oil or any other fluid is prevented from passing from inside the housing to the outside. They are used in transmissions, gearboxes, pumps, motors and all other mechanical equipment with rotating shafts. Thanks to their simple and efficient design, they are the preferred solution for standard sealing applications. In the Hydraulic Seals Shop catalogue, Type A seals are available from stock with fast delivery in Romania and can be supplied in NBR or FKM.
What are A-type seals and what applications are they used for?
The A-type seal is the basic version of the radial seal, without the additional dust protection lip; it is best suited to applications operating in a relatively clean environment. For additional protection, see DC seals, V-type seals and cassette seals.
The role of A-type seals
The A-type seal protects the axial space against oil or any other technical fluid used. Sealing is achieved by a rubber lip, which is held against the shaft by an internal spring, ensuring that sealing efficiency is maintained even when there are pressure variations or minor shaft misalignments.
What to look out for when choosing Type A oil seals
Dimensions, material, rotational speed and temperature conditions
Critical dimensions include the inner diameter of the shaft, the outer diameter of the housing and the seal width. The lip material is selected according to the type of oil or fluid – NBR for mineral oil, FKM for high temperatures or aggressive fluids. The maximum permissible rotational speed and operating temperature are also important.
Advantages of buying A-type oil seals from the Hydraulic Seals Store
Hydraulic Seals Store offers A-type seals from stock at competitive prices, with fast delivery across Romania. Various sizes and materials are available. Orders can be placed easily online. Buy high-quality A-type seals at an excellent price directly from our catalogue. Our team is on hand to provide technical support.
Frequently Asked Questions
How do I choose the right A-type oil seals?
Choose the A-type oil seal based on the shaft diameter, the outer diameter of the housing, the width, the lip material (NBR or FKM) and the shaft rotational speed. The operating temperature and the type of fluid are also important criteria.
What is the difference between A-type seals and other types?
The A-type seal is the basic version, without an additional protective lip. The AS-type seal has an additional dust-proof lip, whilst the cassette seal offers comprehensive integrated protection. The choice depends on the environmental conditions of the application.
When should an A-type oil seal be replaced?
An A-type oil seal should be replaced when visible oil leaks appear on the shaft, when the rubber lip is worn, cracked or deformed, or during the periodic servicing recommended by the equipment manufacturer.
Can I buy A-type seals online?
Yes, you can order A-type oil seals from the Hydraulic Seals Shop catalogue, in the size and material you require, with fast delivery to your address in Romania