This product is widely used in industrial fields such as petrochemicals, power & energy, food, and pharmaceuticals. It is an ideal choice to replace traditional oil-containing seals. Selection should be based on specific parameters such as medium, temperature, and pressure. Operational simulation testing is recommended to verify suitability for critical applications.

Basic Performance Parameters

Performance Indicator	Parameter Range	Test Standard	Remarks
Material Composition	PTFE ≥90% + Reinforcing Fibers + Solid Lubricants	-	Formula can be customized
Temperature Range	-200°C ~ +260°C	ASTM D7216	Short-term tolerance 300°C (≤4h)
Density	1.6 - 2.2 g/cm³	ISO 1183	Adjusted based on weave density
Friction Coefficient	0.05 - 0.10	ASTM D1894	Steel vs. packing, 1 MPa load
Compression Rate	15 - 25%	ASTM F36	Measured at 15 MPa pressure
Rebound Rate	≥ 30%	ASTM F1314	Recovery after load release
Chemical Resistance	pH 0-14 (except molten alkali metals)	ASTM D543	Excluding hydrofluoric acid

Product Specification Comparison

Model	Cross-Section Shape	Size Range (mm)	Reinforcing Material	Reinforcing Material
PTF-100	Square	3×3 ~ 50×50	None	Food/Pharmaceutical Clean Environments
PTF-200	Round	Φ3 ~ Φ60	Glass Fiber	Chemical Pumps/Valves (Acid/Alkali Resistant)
PTF-300	Square	5×5 ~ 40×40	Carbon Fiber	High-Temp High-Pressure Rotary Equipment
PTF-400	Braided Tape	Width 10-100, Thickness 1-5	Graphite Impregnated	Steam System Seals

Mechanical Properties Comparison

Test Item	Pure PTFE Type	Glass Fiber Reinforced	Carbon Fiber Reinforced	Test Method
Tensile Strength (MPa)	15-25	30-45	40-60	ASTM D5035
Compression Deformation Rate (%)	18-22	12-15	10-12	ASTM F36
Wear Amount (mg/100h)	50-80	20-40	15-30	ASTM D3702
PV Limit Value (MPa·m/s)	0.5	1.2	1.8	ASTM D3702

Industry Standards Comparison

Standard System	Corresponding Standard No.	Test Item	Qualification Indicator
International Standard	ISO 10890	Compression & Rebound Performance	Rebound Rate ≥ 25%
American Standard	ASTM F109	ASTM F109	Volume Change Rate ≤ 10%
Volume Change Rate ≤ 10%	Volume Change Rate ≤ 10%	Leakage Rate Test	Leakage Rate Test
Chinese Standard	GB/T 17716	Mechanical Strength	Tensile Strength ≥ 10 MPa

Selection Decision Matrix

Selection Factor	Preferred Option	Alternative Option	Prohibited Scenarios
Food Grade Requirement	PTF-100 (Pure White)	PTF-200 (FDA Certified)	Graphite-containing Models
Strong Acid Environment (pH<2)	PTF-200 (Glass Fiber Reinforced)	PTF-300 (Carbon Fiber)	Standard Braided Type
High-Temp Steam (>200°C)	PTF-400 (Graphite Impregnated)	PTF-300	Pure PTFE (Non-reinforced)
High Rotational Speed (>2 m/s)	PTF-300 (Carbon Fiber)	PTF-200 (Glass Fiber)	Square Packing >25mm width

Note: All data based on standard test conditions; actual application requires consideration of operational fluctuations.

Production Process Flow

1.  Fiber Pre-treatment:

       PTFE fibers undergo plasma treatment to enhance surface activity.

       Solid lubricants (e.g., graphite) are applied via nano-level dispersion coating.

2.  Multi-directional Braiding:

       Uses 8~16 spindle braiding machines with a braiding angle of 45° ± 5°.

       Square/Round cross-section options available with a tolerance of ±0.1mm.

3.  Heat Setting Treatment:

       Temperature control: 300~320°C.

       Time: 30~60 minutes (to eliminate internal stress).

Application Scenario Comparison

Operating Condition	Recommended Model	Recommended Model
Recommended Model	Recommended Model	Resists 300°C saturated steam, no oil/grease carbonization
Strong Acid Pump Seals	Strong Acid Pump Seals	Resists 98% sulfuric acid corrosion
Food/Pharmaceutical Equipment	FDA-Certified Pure PTFE	Compliant with 21 CFR 177.1550 standard
Ultra-Low Temperature Pipelines | Modified PTFE (-200°C)	Modified PTFE (-200°C)	Maintains flexibility, no low-temperature embrittlement

Technology Development Trends

   Nano-Composite Technology:

       Adding Carbon Nanotubes (CNT) improves thermal conductivity by 30%.

       Graphene modification reduces friction coefficient to 0.03.

   Integrated Smart Monitoring:

       Embedded optical fiber sensors for real-time wear monitoring.

       RFID tags to record cumulative operating time.

   Environmentally Friendly Formulations:

       100% recyclable PTFE fibers.

       Biodegradable binders (compliant with REACH regulations).

With its exceptional chemical stability and maintenance-free characteristics, oil-free PTFE packing has become the preferred sealing solution for demanding operating conditions, especially for modern chemical and energy equipment requiring zero contamination and long-term operation.