100% Virgin PTFE – Zero Additives, Zero Compromise
Hongwo’s Pure PTFE Pump Gland Braided Packing Without Oil redefines sealing purity for critical applications where even trace lubricants are unacceptable. Precision-braided from medical-grade PTFE filaments, this packing delivers uncompromised chemical resistance while eliminating the risk of product contamination – making it the gold standard for ultra-clean industries.
Where Absolute Purity is Non-Negotiable
⚕ Pharmaceutical Reactors – USP Class VI compliant for sterile processing
🍶 Food & Beverage Pumps – FDA 21 CFR §177.1550 certified
🔬 Semiconductor Chemical Delivery – Passes SEMI F57 standards
💧 Ultrapure Water Systems – No extractables affecting water resistivity
🧪 Analytical Instrumentation – Won’t interfere with sensitive measurements
Technical Specifications That Guarantee Purity
| Purity Parameter | Test Method | CleanSeal™ Grade | Industry Standard |
|---|---|---|---|
| Total Extractables | USP <661> | <50 ppm | 200-500 ppm |
| Particle Shedding | IEST-RP-CC004 | Class 5 | Class 8 |
| Metallic Impurities | ICP-MS | <1 ppb | <50 ppb |
| Organic Carbon Contribution | ASTM D5904 | 0.2 μg/cm² | 1.5 μg/cm² |
| Biological Reactivity | USP <88> | Pass | Varies |
Breakthrough Manufacturing Technology
✧ Controlled Environment Production
- Class 1000 Cleanroom Braiding – Eliminates ambient contamination
- Medical-Grade Material Handling – From polymer to finished product
- Laser Inspection System – 100% defect detection
✧ Unique Performance Features
• Self-Lubricating Crystalline Structure – No added lubricants required
• Non-Wetting Surface – Prevents microbial adhesion (contact angle >110°)
• Thermal Memory – Maintains seal integrity through sterilization cycles
Why This Packing Outperforms Alternatives
✓ Absolute Material Purity – Certified <0.1% impurities
✓ Sterilization-Compatible – Withstands 500+ autoclave cycles
✓ Non-Outgassing – Vacuum-safe to 10⁻⁶ Torr
✓ Consistent Performance – No lubricant migration or drying out
Specialized Configurations:
- CleanSeal™ XL – Extra-low friction for sensitive bearings
- CleanSeal™ HT – High-temperature version (up to 260°C continuous)
- CleanSeal™ EC – Electrostatic dissipative for flammable fluids
Validation Data From Critical Industries:
▶ 18-month continuous service in mRNA vaccine production bioreactors
▶ 99.97% retention of ultrapure water resistivity (18.2 MΩ·cm)
▶ Zero contamination events in 5nm semiconductor fab operations
(Ask about our Material Certification Package – complete traceability from resin lot to final product!)
