Innovative Sealing Redefined
Hongwo’s Non-Asbestos PTFE Packing with Oil combines the chemical inertness of pure PTFE with advanced oil-impregnation technology. Engineered for aggressive media where traditional packing fails, this premium-grade sealing solution delivers leak-free performance while eliminating shaft wear – even in dry-start conditions.
Mission-Critical Applications
◉ Sulfuric Acid Pumps – Zero degradation in 98% concentration
◉ Chlor-Alkali Processing – Withstands chlorine/sodium hydroxide mixtures
◉ Pharmaceutical Reactors – USP Class VI compliant for sterile environments
◉ Bleach Plant Equipment – Resists oxidizing agents up to 15% NaClO
◉ HF Alkylation Units – Special hydrofluoric acid-resistant formulation
Technical Specifications
| Property | Test Method | Performance Data | Industry Benchmark |
|---|---|---|---|
| Oil Content | ASTM D721 | 18±2% by weight | 50% higher retention than competitors |
| Compression Recovery | ISO 844 | 92% after 500h @ 200°C | 15% better than dry PTFE |
| Chemical Permeation | ASTM F739 | <0.01 μg/cm²/min (conc. H2SO4) | Near-zero penetration |
| Breakaway Torque | DIN 52907 | 30% lower than standard PTFE | Smoother cold-start operation |
| Wear Rate | ASTM D3702 | 0.05mm/1000h @ 10m/s | 8X longer life than aramid |
Patented Tri-Seal Technology
✧ Oil Reservoir Core – PTFE microporous structure stores lubricant
✧ Barrier Jacket – Dense outer layer prevents media contamination
✧ Thermal-Release Channels – Activated at 80°C for optimal lubrication
Why Global Operators Choose This Packing
✓ Dual Protection – PTFE resists chemicals while oil prevents galling
✓ Zero Asbestos – Full compliance with OSHA/REACH regulations
✓ Maintenance Savings – 60% longer replacement intervals
✓ Fail-Safe Design – 72-hour emergency dry-run capability
Available in Three Performance Tiers:
- ChemMaster™ – Standard oil for most acids/alkalis
- PharmaPure™ – USP-grade white oil for GMP facilities
- ExtremeShield™ – Nano-enhanced for HF/red fuming nitric acid
Laboratory Verified:
Our 6-month continuous immersion test in 50% NaOH shows:
• No measurable swelling
• 100% oil retention
• <2% shaft wear
(Ask about our Quick-Ship program – 85% of specialty sizes ship within 72 hours.)
