High-Quality PTFE For Paste Extrusion (HD9204/HD248) For Precision Tubing & Rods

PTFE for Paste Extrusion (HD9204/HD248): Excellent Extrudability, High Tensile Strength. Ideal for Precision Tubes, Rods & Wire Insulation in Chemical & Electrical Industries.

PTFE for Paste Extrusion is a specialized polytetrafluoroethylene (PTFE) material engineered for the paste extrusion process (also known as push pressing method). It is formulated by uniformly mixing fine PTFE resin with organic solvent additives at room temperature, enabling smooth extrusion through dies under controlled pressure to form continuous shapes such as tubes, rods, or wire insulation sheaths. The extruded semi-finished products undergo subsequent drying, sintering, and cooling processes to achieve final forming, while some unsintered products (e.g., raw material tape for water pipe installation) are also available. Our product line includes two high-performance grades-HD9204 and HD248-each tailored to specific extrusion requirements. Retaining PTFE's inherent advantages of exceptional chemical inertness, high-temperature stability (up to 260℃), and excellent electrical insulation, PTFE for Paste Extrusion is widely used in chemical pipelines, electrical wire sheaths, corrosive fluid transportation, and other high-demand applications, providing reliable performance and precise dimensional control for extrusion-manufactured components.

What is PTFE for Paste Extrusion?
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer renowned for its extreme chemical resistance and thermal stability, derived from tetrafluoroethylene monomer polymerization. Paste extrusion is a specialized processing method for PTFE that addresses the material's high melting point and non-melt processability. PTFE for Paste Extrusion is uniquely formulated to match this process: fine PTFE particles (average grain 400-575 μm) are mixed with organic solvents to form a paste-like homogeneous mixture, which exhibits excellent flowability under pressure. This allows the mixture to be extruded through precision dies into continuous profiles (tubes, rods) or coated onto wires for insulation, overcoming the limitations of traditional PTFE processing methods in producing thin-walled or small-diameter components.

Unlike general-purpose PTFE molding powders or other fluoropolymers like FEP (which has lower temperature resistance) and PVDF (weaker chemical inertness), PTFE for Paste Extrusion offers superior extrudability with precise dimensional control. The two grades we offer-HD9204 and HD248-are optimized for different extrusion conditions: HD9204 features a moderate extrusion pressure range (30-45 MPa at 400:1 ratio) and high compression ratio (up to 400), suitable for general-purpose tube and rod extrusion; HD248 boasts better electrical performance and heat resistance, with a higher extrusion pressure range (45-70 MPa at 1700:1 ratio) and ultra-high compression ratio (up to 3000), ideal for high-precision electrical insulation and demanding extrusion applications. Both grades meet Grade A smoothness and cleanness standards, ensuring no contamination in end products, which is critical for chemical and food contact applications.
 

Key Properties & Technical Advantages of PTFE for Paste Extrusion (HD9204/HD248)
PTFE for Paste Extrusion (HD9204/HD248) is engineered with tailored properties to ensure optimal performance in the paste extrusion process and end applications, validated by rigorous testing:
● Excellent Extrudability & Dimensional Precision: The fine particle size (400-575 μm) and homogeneous paste formulation enable smooth flow through dies, ensuring continuous extrusion of components with precise dimensional accuracy (wall thickness tolerance ≤ ±0.05 mm for thin tubes). HD9204's high compression ratio (400) and HD248's ultra-high compression ratio (3000) enhance shape retention during extrusion, reducing post-processing requirements.
● Superior Mechanical Performance: Both grades offer reliable tensile strength (≥25 MPa) and elongation at rupture (≥300%), ensuring extruded components have good flexibility and impact resistance. This enables the production of tubes and rods that can withstand pipeline displacement caused by climate changes or mechanical vibration, and resist breakage during installation and use.
● Exceptional Thermal Stability & Temperature Adaptability: Retaining PTFE's inherent thermal stability, both grades operate reliably at temperatures up to 260℃ (HD9204 melting point 327±5℃; HD248 melting point 325±5℃). HD248 further features a low thermal instability index (≤10), ensuring minimal degradation even under long-term high-temperature exposure, making it suitable for high-heat applications.
● Excellent Chemical Inertness: Like pure PTFE, both HD9204 and HD248 are inert to nearly all industrial chemicals, including strong acids, strong bases, organic solvents, and corrosive gases. This makes extruded components ideal for transporting corrosive fluid media, lining chemical tanks, and manufacturing chemical pipelines, ensuring long-term reliability and preventing leakage.
● Outstanding Electrical Insulation (HD248 Highlight): HD248 is specifically optimized for electrical performance, offering excellent dielectric strength and insulation resistance. It is ideal for producing wire insulation sheaths in high-voltage electrical equipment, ensuring safe and reliable electrical insulation even in harsh environments.
● Low Moisture Content & High Cleanliness: Both grades have a moisture content ≤0.03%, preventing bubble formation during extrusion and sintering, which ensures the density and integrity of finished components. Grade A smoothness and cleanness standards make them suitable for food contact and semiconductor-related applications where contamination is strictly prohibited.

Feature (F)

PTFE for paste extrusion (HD9204/HD248); fine particle size 400-575 μm; tensile strength ≥25 MPa; melting point 325-327℃; HD248: thermal instability index ≤10, ultra-high compression ratio 3000; processing: paste extrusion.

Advantage (A)

Excellent extrudability with precise dimensional control; reliable mechanical strength & flexibility; high-temperature stability; chemical inert; HD248 offers superior electrical performance; low moisture content ensures defect-free extrusion.

Benefit (B)

Reduces production costs (minimal post-processing); ensures long service life of extruded components; enables safe transportation of corrosive media; HD248 meets high-voltage electrical insulation requirements; minimizes product defects; expands application scope across industries.

Evidence (E)

Third-party testing confirms HD9204/HD248 dimensional tolerance ≤ ±0.05 mm for thin-walled tubes; field data shows extruded HD9204 tubes have a service life of 10+ years in chemical pipelines; HD248 compliant with electrical insulation standards (IEC 60707); both grades meet FDA 21 CFR 177.1550 for food contact applications.

Leveraging their excellent extrudability and performance advantages, HD9204 and HD248 are widely used in producing extrusion-molded PTFE components for multiple industries:
● Chemical Industry: HD9204 is ideal for manufacturing chemical pipelines, corrosive fluid transportation tubes, and tank linings. Its chemical inertness and mechanical flexibility enable it to withstand aggressive media and pipeline displacement, ensuring safe and reliable chemical processing.

● Electrical Industry: HD248 is specifically used for producing wire insulation sheaths, high-voltage electrical component insulation, and electrostatic protection components. Its superior electrical insulation performance and heat resistance ensure safe operation of electrical equipment in harsh environments.

● Plumbing & Construction: Unsintered extruded products (e.g., raw material tape) made from HD9204 are used for sealing water pipe connections, preventing leakage and ensuring reliable plumbing systems.

● Mechanical Engineering: Extruded rods and tubes from HD9204 are used for connecting graphite, ceramic, or glass pipes in machinery, and as misalignment pipe connectors to balance pipeline displacement caused by climate or mechanical vibration. They can also eliminate high-frequency mechanical vibration, enhancing equipment stability.

● Specialized Industrial Applications: In special occasions, extruded tubes from HD9204/HD248 are used as tubular reactors or heat exchangers, leveraging their thermal stability and chemical inertness to handle high-temperature and corrosive reaction media.

1. Packaging: Supplied in sealed double-layer PVC bags (inner) + galvanized steel drums (outer), with a net weight of 25KG per drum. Custom packaging options are available upon request.

2. Transportation: Avoid violent collision, direct sunlight, and moisture during transportation. Classified as non-dangerous goods for convenient logistics.

3. Storage: Store in a clean, dry, and well-ventilated warehouse at room temperature (5-30℃), away from heat sources, open flames, and corrosive substances. The organic solvent additives require strict moisture-proof storage to prevent paste deterioration.

4. Shelf Life: 18 months from the production date when stored in compliance with the above conditions.

As a professional PTFE material manufacturer, we provide comprehensive services tailored to the needs of PTFE for Paste Extrusion users:
● Pre-sales Consulting: Our technical team provides customized grade selection advice (HD9204/HD248) based on your specific extrusion requirements (component type, dimensional precision, application environment), and offers paste mixing and extrusion process parameter guidance.
● Technical Support: Offer on-site guidance on paste extrusion, drying, and sintering processes to resolve common issues such as dimensional deviation, surface defects, and poor shape retention, ensuring optimal product performance.
● Sample Provision: Free samples of HD9204 and HD248 for performance testing and extrusion trial, helping you confirm product suitability before formal orders.
● Quality Assurance: Rigorous quality control for each batch, with complete test reports (including particle size, mechanical properties, and thermal stability) provided to ensure consistency and compliance with specifications.
● Customization Services: Provide customized PTFE for Paste Extrusion formulations (particle size, additive ratio) to meet unique extrusion and application requirements, and offer custom packaging and delivery schedules.

Looking for high-performance PTFE for paste extrusion applications? Contact our professional team to get free samples of HD9204/HD248 and detailed technical datasheets (including extrusion process guidelines). We offer competitive pricing, flexible order quantities (trial batches to bulk orders), and global delivery. Whether you need assistance with grade selection, process optimization, or custom formulation, we are here to help. Send your inquiry now or call our sales representative directly to discuss your specific requirements!

25kg/woven bag, 800kg/pallet

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