PTFE Rotary Lip Seals

A PTFE rotary lip seal is a shaft seal with a formed or machined fluoropolymer lip retained in a rigid case. Its low-friction, chemically resistant running edge serves rotating equipment where an elastomeric lip may be unsuitable, including dry-running or poorly lubricated conditions.

Key facts

Family: Rotary & Mechanical Seals
Common types: Single PTFE lip, Dual opposed lips, Lip with dust excluder, Hydrodynamic grooved lip, Flange-mounted seal
Materials: Virgin PTFE, Carbon-filled PTFE, Graphite-filled PTFE, Glass-filled PTFE, Stainless steel, FKM (fluoroelastomer)
Used in: Chemical pumps, Blowers, Food equipment, Pharmaceutical mixers, Compressors, Centrifuges

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Types

Single PTFE lip
Dual opposed lips
Lip with dust excluder
Hydrodynamic grooved lip
Flange-mounted seal

Materials

Applications

Chemical pumps
Blowers
Food equipment
Pharmaceutical mixers
Compressors
Centrifuges

What to send for a quote

shaft and bore diameters
seal width
speed and rotation direction
process medium
shaft finish

Questions about ptfe rotary lip seals

What should I send to identify ptfe rotary lip seals?

Send shaft and bore diameters, seal width, speed and rotation direction, process medium, shaft finish. State whether the running lip has a directional groove and whether secondary lips face the process or atmosphere. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select ptfe rotary lip seals?

Select lip geometry, filler and case material from speed, pressure, lubrication, chemical exposure and shaft surface quality. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08