PTFE Hollow Bar
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PTFE Hollow Bar & Heavy-Wall Tubing: Machining Grade Blanks
As an industry-leading ptfe hollow bar manufacturers, Hebei Xinda Sealing Material Co., Ltd. supplies high-purity polytetrafluoroethylene bar and heavy-wall tubing engineered specifically as premium machining blanks. For global CNC machine shops, valve manufacturers, and component engineers, our near-net-shape hollow profiles significantly reduce material waste, accelerate cycle times, and lower total production costs per part.
Optimize Your CNC Production Costs:
- Zero Internal Voids: 100% guaranteed via light-transmitting material purity inspections.
- Stress-Relieved & Annealed: Our hollow bars undergo proprietary thermal cycles to ensure absolute dimensional stability during high-speed boring and turning.
- Custom Compound Formulations: Available in virgin PTFE or reinforced with Bronze, Glass Fiber, Carbon, or Graphite.
Choosing the Right Processing Grade: Molded vs. Ram Extruded
To match your specific component blueprint and production volume, we offer ptfe hollow bar stock in two distinct manufacturing technologies:
1. Molded PTFE Hollow Bar (Heavy-Duty & Custom Sizes)
Produced through advanced hydraulic compression molding, these heavy-wall profiles offer the highest molecular density and superior structural integrity. They are the ideal choice for large-diameter chemical bushings, valve seats, and high-load structural seals.
Looking for large diameter bushings? Explore our Molded PTFE Hollow Bar (ID 7mm - 300mm) range.
2. Extruded PTFE Hollow Bar (High-Volume CNC Lathe Feeding)
Manufactured via continuous ram extrusion, these bars feature exceptional concentricity and continuous lengths. Optimized for automatic bar feeders, they are perfect for high-volume production of small to medium-sized precision electronic spacers and seals.
Need smaller precision profiles? Check our Extruded PTFE Hollow Bar (ID Φ0.5mm - 24mm) technical specs.
PTFE Hollow Bar Technical Comparison & Tooling Capabilities
Every shipment is delivered with adequate machining allowances (cleanup stock) on both Outer Diameter (OD) and Inner Diameter (ID) to guarantee your final blueprint dimensions.
| Technical Features | Molded PTFE Hollow Bar | Extruded PTFE Hollow Bar |
| Manufacturing Method | Hydraulic Compression Molding | Continuous Ram Extrusion |
| Outer Diameter (OD) Range | Up to 500 mm (Custom Large Formats) | 10 mm – 350 mm |
| Standard Supply Length | 90 - 300mm Billets | 1 - 200m |
| Internal Material Stress | Virtually Zero (Controlled Slow-Cooling) | Fully Stress-Relieved via Post-Annealing |
| Apparent Material Density | 2.10 – 2.30 g/cm³ | 2.10 – 2.30 g/cm³ |
| Customization Elasticity | Extreme (Tailored OD/ID Wall Thicknesses) | Standard Industrial Metric/Inch Sizes |
Need a Quick Wholesale Price or Custom OD/ID Specification?
We accept CAD, STP, and PDF technical drawing blueprints. Get direct factory-contract pricing and international compliance certification within 24 business hours.
Primary Industry Applications: From Blanks to Precision Components
Our global clients turn and mill our heavy-wall polytetrafluoroethylene bar stock into high-performance industrial components:
- Fluid Handling & Chemical Processing: CNC machined cryogenic valve seats, chemical pump liners, corrosion-resistant bushings, and chevron seals.
- Mechanical Engineering: High-load self-lubricating sleeve bearings, wear strips, hydraulic piston rings, and thrust washers.
- Electrical Insulation: High-frequency semiconductor dielectric spacers, insulating connectors, and aerospace terminal components.
FAQ - Frequently Asked Questions
Q: What are the economic benefits of using a PTFE Hollow Bar over a solid rod?
A: Sourcing a hollow bar drastically eliminates the need for expensive core drilling or deep-boring operations. It saves up to 30%-50% in raw material weight and drastically shortens CNC lathe machining cycle times, resulting in significant cost savings.
Q: Are your heavy-wall tubes compliant with international safety and material standards?
A: Yes. All Hebei Xinda industrial fluoropolymer profiles are processed under strict ISO protocols and comply 100% with REACH, and RoHS 2.0 directives. Complete material test reports (MTRs) and certificates of conformity are available upon wholesale order request.
