Oil seals are available at Bearing King both metric and imperial and in a wide range of materials
Oil Seals are essential components used to protect machinery, bearings and rotating equipment from lubricant loss and external contamination. Also known as rotary shaft seals, an oil seal is designed to create a reliable barrier between a rotating shaft and the surrounding housing. This helps keep oils, greases and other lubricants inside the system while preventing dust, dirt, water and debris from entering.
At Bearing King, we supply a wide range of Oil Seals in both metric and imperial sizes, making it easy to find the correct seal for maintenance, repair and replacement work. Whether you are working on industrial machinery, automotive components, agricultural equipment, electric motors, gearboxes, pumps or general engineering applications, choosing the right oil seal can help improve performance, reduce wear and extend the service life of your equipment.
What Are Oil Seals Used For?
An oil seal is commonly used wherever a shaft rotates through a housing and lubrication needs to be retained. The seal sits around the shaft and forms a close contact surface, helping to stop oil or grease from escaping. At the same time, it acts as a protective barrier against contaminants that could damage bearings, gears and other internal components.
Oil seals are widely used across many sectors because they offer a simple, cost-effective and dependable sealing solution. They are commonly found in engines, transmissions, wheel hubs, hydraulic equipment, motors, pumps, compressors, agricultural machinery and workshop equipment. A correctly fitted oil seal helps reduce downtime, prevent lubricant leakage and maintain the smooth running of mechanical systems.
Metric and Imperial Oil Seals
Bearing King stocks both metric and imperial Oil Seals to suit a variety of applications. This is particularly useful when working with older machinery, classic vehicles, imported equipment or replacement parts where the original seal size may not follow modern metric standards.
Our Oil Seals collection includes:
Nitrile Oil Seals Imperial
Nitrile imperial oil seals are suitable for many general-purpose sealing applications where imperial dimensions are required. Nitrile rubber, also known as NBR, offers good resistance to oils, greases and fuels, making it a popular material for rotary shaft seals.
Nitrile Oil Seals Metric
Nitrile metric oil seals are widely used across modern machinery and engineering applications. They provide a strong balance of durability, flexibility and affordability, making them ideal for regular maintenance and replacement work.
Viton Oil Seals Metric
Viton oil seals are designed for more demanding conditions where higher temperature resistance or improved chemical resistance may be needed. Viton, also known as FKM, is commonly selected for applications involving heat, aggressive media or harsher operating environments.
Choosing the Right Oil Seal
When selecting an oil seal, it is important to consider the working conditions of the application. Factors such as shaft speed, operating temperature, pressure, lubricant type and exposure to external contaminants can all affect seal performance.
The correct size is also essential. An oil seal is usually measured by three key dimensions: inside diameter, outside diameter and width. The inside diameter must match the shaft, while the outside diameter must fit securely into the housing. The width must also be suitable for the space available.
Material choice is another important consideration. Nitrile oil seals are suitable for many standard applications involving oils and greases, while Viton oil seals are often chosen when higher heat resistance or chemical compatibility is required. Selecting the correct material helps prevent premature failure and ensures the seal performs reliably under the required conditions.
Reliable Oil Seals from Bearing King
Bearing King makes it simple to source quality Oil Seals for a wide range of industrial, automotive and engineering uses. Our collection covers popular metric and imperial sizes, with options available in reliable materials such as nitrile and Viton.
Whether you are replacing a worn rotary shaft seal, maintaining machinery or sourcing components for a repair project, the right oil seal can make a significant difference to reliability and efficiency. By preventing lubricant leakage and protecting internal components from contamination, Oil Seals play a vital role in keeping equipment running smoothly.
Browse our Oil Seals collection today to find the right size, material and style for your application.
