Air Compressor PTFE Shaft Oil Seal Kit Rotary Sealing
Engineered for modern rotary screw air compressors, our oil seals feature advanced PTFE and stainless-steel construction for exceptional high-pressure, high-temperature sealing performance. Available in single-lip and double-lip designs, these seals ensure long-lasting protection against oil leakage and contamination, replacing imported equivalents with superior reliability and cost efficiency.
| Application |
Air Compressor |
|---|---|
| Material |
PTFE ,Stainless Steel |
In screw air compressors, the shaft oil seal plays a crucial role in preventing lubricating oil from leaking out of the compressor chamber while keeping dust, moisture, and contaminants from entering.
Our new-generation PTFE (polytetrafluoroethylene) shaft seals are specifically designed for demanding compressor environments, providing outstanding wear resistance, low friction, and long-term sealing stability under continuous rotation and high pressure.
Material and Structure
Each seal is made with a stainless-steel skeleton and a precision-formed PTFE sealing lip. Depending on the working conditions, the outer casing can be fully rubber-coated or left uncoated for mechanical fit installations.
The PTFE lip surface features reverse spiral grooves on the inner wall, creating a micro pumping effect that generates inward oil pressure during shaft rotation—effectively preventing lubricant leakage and maintaining seal integrity.
Key Construction Types
- PTFE Rotary Oil Seal: Excellent for high-speed shafts and chemically aggressive environments.
- High-Pressure PTFE Seal: Designed for air ends operating under elevated discharge pressures.
- High-Temperature Stainless Steel Seal: Maintains elasticity and sealing precision in temperatures exceeding 200°C.
- Single-Lip and Double-Lip Designs: Options available for different lubrication retention and dust exclusion needs.
Performance Advantages
- Superior Wear Resistance: PTFE lips resist friction and temperature-induced degradation.
- Corrosion-Proof Frame: Stainless-steel skeleton provides mechanical stability and extended service life.
- High Sealing Efficiency: Spiral groove design ensures continuous inward oil recovery and prevents external leakage.
- Low Friction & Energy Saving: Smooth PTFE surface minimizes heat generation, ideal for continuous compressor operation.
- OEM-Grade Replacement: Fully compatible with leading international compressor brands.
Compatible Air Compressor Brands
Our oil seals are designed to replace OEM components for:
Atlas Copco, Ingersoll Rand, Sullair, Kaeser, CompAir, Gardner Denver, Hitachi, Kobelco, Quincy, Fusheng, and Boge — among others.
Each seal is engineered to meet the precise shaft dimension and operating pressure of the respective compressor model.
Specifications and Customization
We offer a complete range of oil seal specifications, including:
- Shaft diameters: 25mm – 180mm
- Pressure resistance: up to 1.2 MPa
- Temperature range: –40°C to +220°C
- Lip types: Single-lip / Double-lip / Dust lip combinations
- Materials: PTFE / FKM / NBR with stainless-steel or carbon-steel frame
Customized seals are available for special industrial applications, such as high-speed rotation, high-temperature compressors, or food-grade air systems.
| Dimensions | |||||||
|---|---|---|---|---|---|---|---|
| 50*58*48 | 54*66.7*50.8 | 55*68*30 | 60*70*25 | 50*60*25 | 54*76.2*50.8 | 55*68*34 | 60*70*28 |
| 50*60*28 | 54.8*65*51 | 56*65*31 | 60*70*30 | 50*60*40 | 54.9*65*51 | 57*65*28 | 60*70*35 |
| 50.7*54*25.5 | 55*60*25 | 58*68*34 | 60*70*40 | 50.8*54*25.5 | 55*60*35 | 58*70*40 | 60*70*42 |
| 50*65*41 | 55*63*45 | 59*70*37 | 75*85*42 | 52*60*28 | 55*65*30 | 59*70*87 | 75*85*54 |
| 52*62*28 | 55*65*40 | 60*68*25 | 75*85*60 | 53*60*54 | 55*65*45 | 60*68*35 | 75*85*57 |
| 53*65*46 | 55*65*50 | 60*68*45 | 75*85*60 | 53*65*56 | 55*65*60 | 60*68*48 | 75*87*45 |
(Please confirm your compressor’s part number before purchase.)
Applications
These shaft seals are widely used in:
- Rotary screw air compressors
- Centrifugal compressors
- Vacuum pumps and blowers
- Hydraulic systems and motors
Other rotary sealing systems requiring high chemical and thermal resistance
Quality Control and Testing
Each seal undergoes rigorous dimensional inspection, thermal aging simulation, and rotary endurance testing.
Testing standards include ISO and DIN , ensuring all seals maintain consistent performance in dynamic operation and meet international quality benchmarks.
Why Choose Our Oil Separator
Our PTFE and stainless-steel rotary oil seals deliver reliable, maintenance-free operation and superior resistance to oil leakage, oxidation, and wear. They are a direct replacement for imported seals, providing an excellent balance between performance and value.
Whether used in OEM production, compressor overhauls, or maintenance kits, our sealing solutions ensure long-term reliability and reduced downtime.
MAECENAS IACULIS
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