Oil Seal Single Lip SC Type/ Wiper Lip TC Type

The SC type oil seal, also known as a single lip oil seal, is a rotary seal commonly used for sealing fluids or preventing contaminants from entering mechanical components. It typically consists of a metal case with a rubber or elastomer lip that makes contact with the rotating shaft.

The TC type oil seal, also known as a double-lip oil seal, incorporates an additional wiper lip along with the primary sealing lip. The wiper lip acts as a protective barrier, wiping away dirt, debris, and other contaminants from the shaft surface before they can reach the sealing lip. This design offers enhanced protection against external contaminants, making TC type oil seals suitable for applications exposed to harsh environments or contaminants.

Characteristic of SC Type:

1. Size and Dimensions: Oil seals are available in various sizes and dimensions to fit different shaft diameters and housing bores. The size of the oil seal should match the specific requirements of your application, ensuring a proper fit and effective sealing.

2. Material: The material of the oil seal's lip is crucial for its performance and durability. Common materials for the lip include nitrile rubber (NBR), fluoroelastomer (FKM), and silicone, each offering different resistance to temperature, chemicals, and other environmental factors. Select a material that suits the specific operating conditions of your application.

3. Pressure and Speed Rating: Consider the pressure and speed at which the oil seal will operate. Higher pressures or speeds may require a more robust seal design with enhanced sealing capabilities to prevent leakage and withstand the forces exerted on the seal.

4. Temperature Range: Evaluate the temperature range in which the oil seal will operate. Some oil seal materials, such as FKM, can withstand higher temperatures compared to NBR. Ensure the selected seal material can handle the temperature range without compromising its sealing performance.

5. Lubrication: Determine the type of lubrication used in the application. Some oil seals are designed for oil-lubricated systems, while others are suitable for grease-lubricated systems. Select the appropriate seal that will effectively retain the lubricant and prevent leakage.

6. Application Environment: Consider the surrounding environment of the application, including exposure to chemicals, oil, water, dust, or other contaminants. Choose an oil seal with the appropriate material and design features to resist the specific environmental elements and provide reliable sealing performance.

7. Manufacturer's Recommendations: Consult with reputable suppliers and manufacturers of oil seals for their recommendations based on your specific application requirements. They can provide guidance and expertise to help you select the most suitable oil seal for your needs.

Characteristic of TC Type:

1. Primary Sealing Lip: The primary sealing lip is in contact with the rotating shaft and prevents the leakage of fluid, such as oil or grease, from the system. It is designed to create a tight seal and maintain lubrication within the system.

2. Secondary Wiper Lip: The secondary wiper lip is located behind the primary sealing lip. Its main function is to scrape off any contaminants, such as dirt, dust, or debris, from the shaft surface. This helps to protect the primary sealing lip and prolong the seal life.

3. High-Quality Material: TC type oil seals are typically made from materials such as Nitrile (NBR), Viton (FKM), or Silicone (VMQ). The material selection depends on the specific requirements of the application, including temperature, fluid compatibility, and sealing performance.

4. Versatility: TC type oil seals can be used in a wide range of industries and applications, including automotive, industrial machinery, agricultural equipment, and more. They are suitable for both rotary shafts and reciprocating or oscillating movements.

5. Easy Installation: These oil seals are designed for easy installation, usually press-fitted into a housing or bore. Care should be taken during the installation process to ensure proper alignment and avoid damage to the sealing lips.

6. Maintenance and Replacement: Over time, oil seals may wear out due to friction, temperature, or other factors. Regular inspection and maintenance are important to identify signs of wear or leakage. If necessary, the old seal can be removed and replaced with a new TC type oil seal.