PTFE Bushes
Self-lubricating virgin and filled PTFE sleeve bushings engineered for dry-running, grease-free rotational and reciprocating pivots. Eliminates shaft galling, resists all industrial chemicals, and operates reliably in submerged liquids.
Types & Configurations of PTFE Bushes
Cylindrical Plain PTFE Sleeve Bushes
Standard straight bore bushings for chemical pumps, agitators, and corrosive fluid valves.
Flanged PTFE Thrust Bushings
Integrated collar carrying both high radial loads and continuous axial thrust forces.
Glass-Filled PTFE High-Load Bushes
25% glass fiber reinforced bushings resisting mechanical deformation under high compressive loads.
Carbon-Filled High-Velocity Bushings
High thermal dissipation sleeve bearings operating at high surface speeds without overheating.
Split-Seam Thin Wall PTFE Bearings
Pre-formed split bushings easily pressed into blind housing bores without special tools.
Key Industrial Applications
Specifications & Technical Details
PTFE Bushes can be precision-manufactured in custom dimensions, wall thicknesses, cross-sections, and durometers to match your exact application specifications. Below are typical engineering cross-section drawings and technical parameters for reference.
Typical Dimension Drawings & Blueprint Cross-Sections
Technical Specifications
| Parameter | Specification / Options |
|---|---|
| Bore Diameter Range | 3.0mm up to 300mm internal diameter |
| Bore Tolerance | ISO H7 / H8 reamed precision tolerance |
| Max Dynamic PV Rating | 0.6 MPa·m/s (virgin PTFE); up to 2.2 MPa·m/s (carbon/bronze filled) |
| Shaft Recommended Surface | Hardened steel (> 45 HRC) ground to Ra < 0.4 µm |
| Chemical Compatibility | Compatible with 100% sulfuric acid, aqua regia, liquid chlorine, and ammonia |
| Water Swelling | 0.00% (zero dimensional drift under water immersion) |
| Operating Temp | -200°C to +260°C |
Material Selection & Properties
We offer specialized compound formulations tailored to chemical media, thermal extremes, static deflection, and dynamic fatigue requirements. The best material depends on your operating environment and required service life.
| Material / Polymer | Key Engineering Properties | Recommended Applications & Considerations |
|---|---|---|
| Virgin PTFE (Teflon™) | Universal chemical inertness (pH 0-14), temp up to +260°C | Pharmaceutical seals, cryogenic valve seats, gaskets |
| 15% / 25% Glass-Filled PTFE | Reduced creep/cold flow under compressive mechanical load | Hydraulic backup rings, cylinder piston wear bands |
| Carbon / Graphite Filled PTFE | Low friction, high thermal conductivity, dry running | Compressor rider rings, dynamic rotary shaft lip seals |
| Bronze-Filled PTFE (40% / 60%) | Maximum compressive strength & thermal dissipation | Heavy hydraulic guide rings, high-pressure piston cups |
| Modified / TFM PTFE | Lower permeation, smoother surface finish, higher fatigue | Semiconductor ultra-pure valves, diaphragm pumps |
Important Engineering Guidance
The above properties are general characteristics. Final material selection depends on your specific application, operating conditions, load requirements, media compatibility, and service temperature. Please contact our polymer engineering team for tailored compounding guidance on PTFE Bushes.
Production Batch Gallery
Actual production batch examples of PTFE Bushes manufactured for OEM, automotive, railway, and heavy engineering clients. We manufacture standard catalogue sizes as well as bespoke custom geometries from your CAD models or physical samples.
Request an Engineering Quote
Share your required dimensions, polymer grade, or 2D/3D drawings for immediate engineering review and quote.