PTFE Bushing

PTFE Bushing is a precision-machined bearing and guide component designed to provide a low-friction interface between shafts, housings, and other mating parts. Manufactured from polytetrafluoroethylene (PTFE), it offers low friction, excellent chemical resistance, electrical insulation, and reliable performance in applications where conventional lubricated or metallic bushings may not be suitable.

JIAFUXIN manufactures PTFE sleeve bushings and PTFE flanged bushings according to customer drawings. Inside diameter (ID), outside diameter (OD), length, wall thickness, flange diameter, flange thickness, grooves, shoulders, and other profiles can be CNC machined to match the shaft and housing design.

PTFE Bushing Specifications

PTFE Flanged Bushing

The PTFE Flanged Bushing shown here combines a cylindrical sleeve with an integral flange.

The sleeve section fits between the shaft and housing to provide a low-friction guiding surface, while the flange provides axial positioning and separates adjacent mating surfaces.

Critical dimensions include:

• Inside diameter (ID)
• Outside diameter (OD)
• Overall length
• Wall thickness
• Flange outside diameter
• Flange thickness
• Shaft and housing fit
• Dimensional tolerances

These dimensions can be machined according to the customer’s equipment drawing.

Key Features

• Low-friction sliding surface
• Excellent resistance to many corrosive chemicals
• Suitable for dry-running applications under appropriate operating conditions
• Non-metallic bearing and guide surface
• Excellent electrical insulation
• Very low moisture absorption
• Resistant to rust and corrosion
• Straight, flanged, and stepped designs available
• CNC machined to custom dimensions
• Virgin and filled PTFE grades available

Custom PTFE Bushing Designs

PTFE bushings can be machined in different configurations to match the assembly.

PTFE Sleeve Bushing

Straight cylindrical design specified primarily by:

ID × OD × Length

Suitable for shaft guidance, spacing, and sliding applications.

PTFE Flanged Bushing

Sleeve design with an integral flange for applications requiring both radial guidance and axial positioning.

Typical dimensions:

ID × OD × Length + Flange OD × Flange Thickness

Stepped PTFE Bushing

Machined with shoulders or multiple diameters to match stepped housings, shafts, or equipment-specific installation positions.

Additional grooves, chamfers, recesses, and other features can be machined according to drawings.

Typical Applications

PTFE bushings are used as bearing, guide, isolation, or sliding components in:

• Pumps and valves
• Chemical-processing equipment
• Shafts and guide mechanisms
• Semiconductor equipment
• Laboratory equipment
• Electrical equipment
• Food-processing machinery
• Packaging equipment
• Automation equipment
• OEM mechanical assemblies

For moving applications, the bushing should be specified according to the actual load, speed, shaft material, surface finish, clearance, temperature, and operating environment.

Frequently Asked Questions

Can PTFE Bushings be made to custom dimensions?

Yes. ID, OD, length, wall thickness, flange dimensions, grooves, shoulders, and other features can be machined according to drawings.

Do you manufacture PTFE Flanged Bushings?

Yes. JIAFUXIN manufactures both straight PTFE sleeve bushings and PTFE flanged bushings, including custom stepped and profiled designs.

Are filled PTFE Bushings available?

Yes. Virgin PTFE and filled PTFE grades, including glass-, carbon-, graphite-, and bronze-filled PTFE, are available depending on the application.

What dimensions are required for a PTFE Flanged Bushing?

The main dimensions are ID, OD, overall length, flange OD, and flange thickness. Critical fits and tolerances should also be included on the drawing.

Can you manufacture from an existing sample?

Yes. Existing bushings can be evaluated from a sample, although a dimensioned drawing is preferred for parts requiring precise shaft or housing fits.