PTFE Lip Seals

KOK supplies PTFE lip seals for pneumatic and air-driven rotary systems requiring low friction, chemical resistance, and stable performance under continuous shaft rotation.

These seals utilize a fully formed PTFE sealing lip — not bonded coatings — providing consistent wear characteristics and dimensional stability in dry or lightly lubricated environments.

Functional Characteristics

KOK PTFE lip seals are typically specified for:

• Rotary shaft sealing in air compressors
• High-speed, low-to-moderate pressure applications
• Low friction torque requirements
• Resistance to compressed air, light lubricants, and chemical exposure

The inherent properties of PTFE allow for reduced stick-slip behavior, minimal heat generation, and extended service life compared to conventional elastomer lip designs in similar operating environments.

Engineering Considerations

Seal performance is aligned with:

• Shaft surface finish and hardness
• Operating pressure and rotational speed
• Temperature range
• Media compatibility
• Custom lip geometries and dimensions are supported based on application-specific requirements.

Application Scope

KOK PTFE lip seals are commonly used in:

• Air compressors
• Pneumatic rotary systems
• Air-driven industrial equipment
• Light-duty rotary fluid systems