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PTFE Oil Seal

PTFE Lip Oil Seals for Air Compressor - Professional Manufacturer Supply
PTFE Oil Seal

PTFE Lip Oil Seals for Air Compressor - Professional Manufacturer Supply

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  • PTFE Lip Oil Seals for Air Compressor - Professional Manufacturer Supply
  • PTFE Lip Oil Seals for Air Compressor - Professional Manufacturer Supply
  • PTFE Lip Oil Seals for Air Compressor - Professional Manufacturer Supply
  • PTFE Lip Oil Seals for Air Compressor - Professional Manufacturer Supply

Description


Our PTFE Lip Oil Seals are specifically developed for air compressor applications, integrating the unique properties of PTFE (Polytetrafluoroethylene) material with advanced lip design. Unlike traditional rubber seals, PTFE lip seals offer exceptional durability and stability, effectively preventing lubricating oil leakage, blocking external dust and moisture, and ensuring the efficient and stable operation of air compressors. Suitable for both screw air compressors and reciprocating air compressors, they are widely used in industrial manufacturing, machinery processing, mining, construction and other fields.

Core Features & Advantages

• Superior Wear Resistance: PTFE material has an extremely low friction coefficient (0.02-0.04), which significantly reduces the friction between the seal lip and the shaft, minimizing wear and tear during long-term high-speed operation. It can maintain excellent sealing performance even after thousands of hours of continuous work, greatly extending the service life of the seal and the air compressor.

• Wide Temperature Adaptability: The operating temperature range of our PTFE lip oil seals is -200℃ to 260℃, which can perfectly adapt to the high-temperature environment generated by air compressors during operation (usually 80℃-180℃). It will not soften, deform or crack at high temperatures, nor will it become brittle at low temperatures, ensuring stable sealing in extreme working conditions.

• Excellent Oil & Chemical Resistance: PTFE material is inert to most industrial lubricating oils, hydraulic oils and chemical media, so it will not swell, harden or degrade when in long-term contact with air compressor lubricants. It maintains stable dimensions and sealing performance, avoiding seal failure caused by material corrosion.

• High Sealing Precision: The seal lip is precision machined with a special structure (such as single lip, double lip or multi-lip design), which can form a uniform and stable oil film on the shaft surface, effectively blocking the leakage of lubricating oil and the intrusion of external dust, moisture and metal debris. It also prevents compressed air from leaking along the shaft gap, ensuring the air compressor's exhaust volume and energy efficiency.

• Low Maintenance & Long Service Life: With excellent wear resistance and anti-aging performance, our PTFE lip oil seals require no frequent replacement, reducing maintenance costs and downtime of air compressors. Compared with traditional NBR or FKM seals, the service life is increased by 3-5 times in harsh working conditions.

• Customizable Design: We can customize the size, lip structure, skeleton material and surface treatment of PTFE lip oil seals according to the specific model and working conditions of your air compressor (such as screw air compressor, reciprocating air compressor), ensuring perfect matching and optimal sealing effect.

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Technical Specifications

Item

Specification

Material

PTFE (Polytetrafluoroethylene) + Metal Skeleton (SUS304/SPCC) + Spring (Stainless Steel)

Operating Temperature

-200℃ ~ 260℃

Friction Coefficient

0.02 - 0.04

Operating Speed

≤ 15 m/s

Working Pressure

≤ 1.6 MPa

Lip Design

Single Lip / Double Lip / Multi-Lip (Optional)

Shaft Diameter Range

10mm - 500mm (Customizable)

Application

Screw Air Compressor, Reciprocating Air Compressor, Industrial Air Compressor


Application Scenarios

Our PTFE Lip Oil Seals are widely used in various types of air compressors, mainly installed in the following key positions:

• Air Compressor Spindle End: Isolate the oil chamber from the compression chamber and the atmosphere, preventing lubricating oil leakage and compressed air loss.

• Bearing Housing: Seal the two ends of the bearing, prevent lubricating oil from leaking out, and block external dust and moisture from entering, protecting the bearing from wear.

• Drive Shaft End: Seal the connection between the motor and the air compressor host, preventing lubricating oil from leaking from the motor side into the host.

• Piston Rod (Reciprocating Air Compressor): Scrape excess lubricating oil on the piston rod, prevent oil from entering the compression chamber, and ensure the purity of compressed air.

Manufacturer Advantage

As a professional seals manufacturer, we have advanced production equipment, strict quality control system and experienced R&D team. We use high-purity PTFE raw materials and precision machining technology to ensure that each PTFE lip oil seal meets international standards. We can provide customized solutions according to customer needs, offer competitive prices and timely delivery, and provide professional after-sales service to solve your sealing problems.

If you need PTFE Lip Oil Seals for air compressors, please contact us for more details and quotation. We are committed to providing you with high-quality, reliable sealing products and professional technical support.



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What factors influence the performance of industry rubber seals

The sealing effect of the sealing ring is related to the material characteristics of the sealing ring. There is also a close influence on other factors. For example, the speed of rotation, working temperature, working pressure, working medium, etc., today I will tell you about the four factors that affect the sealing performance of the sealing ring.

First, the speed of rotation

  When the rotation speed is very low (< 0.03m/s), it is necessary to consider the smoothness of the operation of the equipment and whether the operational appears "crawling" phenomenon. When the movement speed is very high (> 0.8m/s), the lubricating oil film may be destroyed, and the oil seal is not well lubricated and frictions heat, resulting in greatly reduced life. It is recommended that polyurethane or rubber and plastic oil seal work in the speed range of 0.03m/s ~ 0.8m/s. High-speed oil seals need to put forward higher requirements for structure and material, and the speed of household appliances oil seals can reach 20000rpm. Both wear and temperature resistance need to be met, and the concentricity requirements of dynamic sealing on the installation are relatively high.  

Second, the temperature of the working environment

  Low temperature will reduce the elasticity of rubber and plastic oil seals, resulting in leakage, and even the entire oil seal becomes hard and brittle. High temperature will make the oil seal volume expansion, soft, resulting in the oil seal friction resistance increases rapidly and the pressure resistance decreases. It is recommended that the continuous operating temperature range of ordinary polyurethane or rubber and plastic oil seals be -10 ° C to +80 ° C. For the high temperature and high speed requirements of the working environment, we need to choose to use fluorine rubber and PTFE, high temperature resistance and wear resistance is better, the low temperature environment is generally to -40 degrees, and the rubber performance is tested at high and low temperatures to ensure that the product quality meets the requirements.  

Third, the working pressure of machinery

  The oil seal has a minimum service pressure requirement. Oil seals with low friction and low starting resistance should be selected for low pressure work. Below 2.5MPa, polyurethane oil seal is not suitable; High pressure to consider the oil seal pressure deformation, need to use anti-extrusion stop ring, grooving processing also has special requirements.

Fourth, the working medium

  General sealing media are gasoline, oil, diesel, grease, and some static sealing dust. In addition to selecting the working medium strictly according to the manufacturer's recommendations, it is important to keep the working medium clean. Aging or contamination of the oil will not only cause the components in the system to fail, accelerate the aging and friction of the oil seal, but also the dirt in it may scratch or embed the oil seal, making the seal fail. Therefore, it is necessary to regularly check the quality of the oil and its cleanliness, and replace the oil filter or oil according to the maintenance specifications of the equipment. The air remaining in the oil in the cylinder will be compressed by high pressure, which will cause the oil seal to burn out or even carbonize. In order to avoid this situation, exhaust treatment should be carried out at the initial operation of the hydraulic system. The hydraulic cylinder should also run at low pressure and slow speed for a few minutes to confirm that the residual air in the oil has been drained before it can work normally.