1. Product Overview

Skeleton oil seal FKM/FPM (fluoro rubber) is a sealing device composed of fluorinated rubber (FKM) and a metal skeleton. It combines the high temperature resistance and chemical resistance of fluoro rubber with the strength and support of the metal skeleton, and is widely used in sealing environments that require high temperature, high pressure, chemical corrosion and mechanical strength. Commonly used in hydraulic, automotive, machinery, petrochemical and other industries.

2. Working principle

Skeleton oil seal consists of a shell (usually a metal material), an elastic rubber sealing lip and a metal skeleton. The metal skeleton plays a supporting role to ensure that the sealing lip and the contact surface maintain appropriate pressure, thereby achieving effective sealing. The sealing lip of fluoro rubber provides resistance to chemical corrosion and prevents oil leakage.

During operation, the sealing lip of the oil seal is in close contact with the surface of the shaft or housing to ensure that no oil or gas leaks and prevent external contaminants from entering the sealing system.

3. Material selection

Sealing material: FKM (fluoro rubber) has excellent high temperature resistance, chemical resistance, and oil resistance, and is suitable for use in high temperature and high pressure environments.

Frame material: The frame is usually made of stainless steel or carbon steel to enhance the structural strength of the oil seal and ensure that it will not deform or break under high pressure.

Shell material: The shell is usually made of metal, which has high strength and can protect the internal sealing lip from external mechanical damage.

4. Application areas

Hydraulic system: used in hydraulic equipment such as hydraulic cylinders, hydraulic pumps, hydraulic motors, etc. to prevent oil leakage and improve the sealing of the equipment.

Automotive industry: widely used in automobile engines, gearboxes, bearings and other components to seal lubricating oil, coolant, etc. to ensure engine performance and stable operation.

Petrochemical industry: used in oil drilling equipment, chemical reaction equipment, oil and gas pipelines, etc. to resist corrosion from chemical substances such as oil, natural gas, acids and alkalis.

Aerospace: used for sealing in high-pressure and high-temperature environments such as fuel systems and hydraulic systems in aviation equipment to ensure the reliability of the equipment.

Industrial machinery: suitable for various types of mechanical equipment to prevent oil leakage and ensure system sealing to prevent external pollutants from entering.

5. Size and Customization

Standard Size: The size of FPM skeleton oil seals ranges from a few millimeters to hundreds of millimeters. Common oil seal diameters include 20mm, 30mm, 40mm, 50mm, etc. The thickness of the oil seal is selected according to the specific application needs.

Customization Options: According to customer requirements, different sizes, hardness, sealing lip shapes, skeleton structures, etc. can be customized to adapt to special working conditions.

6. Installation and Maintenance

Installation: When installing the skeleton oil seal, ensure that the installation surface is smooth and clean to prevent particles and impurities from entering the sealing area. During installation, avoid excessive stretching or twisting of the oil seal to avoid damage.

Maintenance: Regularly check the working status of the oil seal to ensure that there is no oil leakage. If wear, aging or deformation is found, the oil seal should be replaced in time to ensure the normal operation of the equipment.

7. Advantages

Excellent high temperature resistance: It can maintain a long-term stable sealing effect under high temperature working environment.

Chemical corrosion resistance: It can resist a variety of corrosive media such as oils, acids, alkalis, solvents, etc.

High structural strength: The metal skeleton provides high-strength support and is suitable for harsh environments such as high pressure and vibration.

Long life and reliability: It has a long service life and excellent reliability, reducing equipment maintenance and downtime.

8. Disadvantages

Higher cost: Compared with ordinary rubber oil seals, FPM skeleton oil seals are more expensive, but due to their high temperature resistance and chemical resistance, they are often used in high-end equipment that requires long-term stable operation.

High requirements for the installation environment: During installation, it is necessary to ensure that the environment is clean to avoid damage to the sealing lip.