Stainless Steel Double-Lip Bidirectional Oil Seal: High-Performance Sealing Solution

In the field of industrial equipment sealing, stainless steel double-lip bidirectional oil seals represent a breakthrough in structural innovation and reliability. This solution effectively addresses leakage issues under high-pressure, dusty, and complex motion conditions.

​I. Innovative Structural Design​

​1. Dual-Lip Synergistic Sealing​

• ​Primary Seal Lip: Fluororubber (FKM) material with symmetrical bidirectional edges (≤40MPa pressure resistance)
• ​Dust Lip: PTFE composite layer blocks external particles >10μm (≥99% efficiency)
• ​Synergy: Dual protection against internal fluid leakage and external contaminants

​2. Stainless Steel Skeleton Core​

• Material: SUS630 precipitation-hardened stainless steel
• Key Properties:
  • Yield strength ≥1000MPa (300% deformation resistance improvement)
  • Thermal expansion matching metal housings (-40°C~220°C stability)

​3. Adaptive Compensation​

• Automatic radial interference compensation for shaft wear (±1mm)
• Rigid-flexible coupling design withstands ±3mm axial vibration

​II. Performance Advantages​

​III. Industrial Applications​

​1. Construction Machinery​

• Hydraulic cylinder seals for excavators/loaders
• Swing bearing protection for tunnel boring machines

​2. Energy Equipment​

• Wind turbine gearboxes (-30°C performance)
• Oilfield pumping units (sand & H₂S resistance)

​3. Transportation​

• Commercial vehicle hubs (80km/h endurance)
• Railway bogies (vibration & moisture resistance)

​IV. Technical Specifications​

• Shaft diameter range: 20-500mm
• Max linear speed: ≤20m/s
• Standard materials: SUS630 + FKM/PTFE
• Certifications: ISO 6194, DIN 3761, IP69K

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