PTFE aramid packing & aramid fiber packing for valve
Aramid packing is a high-strength sealing material braided from tough aramid fibers, designed to operate reliably in equipment exposed to heat, abrasion, and demanding process media. With excellent mechanical stability and low wear characteristics, it provides dependable sealing for pumps, valves, mixers, and rotating machinery across a wide range of industries. Its durable structure supports long service life, reduced maintenance, and consistent performance under challenging operating conditions.
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Professional Aramid Packing: PTFE Aramid & Pure Aramid Fiber Solutions
Hebei Xinda is a specialized manufacturer of high-durability aramid packing. We provide two primary types of industrial sealing solutions: Pure Aramid Fiber Packing and PTFE Aramid Packing. Both are engineered to handle high-pressure environments and abrasive fluids where standard sealing materials fail.
Aramid Packing Data Sheet
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| Test Item | Unit | Target |
| Temperature | ℃ | -200 ~ +300 |
| Pressure | Mpa | 20-30 |
| Loss on Igntion | ||
| Line Speed | m/s | 0-25 |
| Ph Valve | 2-12 |
Three Main Types & Their Differences
Type 1. Aramid Fiber Packing
Made from high-tenacity aramid yarns braided into a dense, stable structure.
Strength & Wear Resistance：Highest mechanical strength among the three types; maintains shape under strong shaft pressure.
Temperature Handling：Reliable under continuous high-temperature operations.
Best Use Case：Ideal for slurry pumps, high-speed rotating equipment, and environments with heavy abrasive media.
Type 2. PTFE Aramid Packing
Aramid fibers are uniformly impregnated with PTFE dispersion.
Lower Friction：PTFE surface greatly reduces heat build-up during operation.
Improved Chemical Resistance：More compatible with mild acids, weak alkalis, and corrosive fluids than pure aramid.
Best Use Case：General industrial pumps and valves requiring smooth operation and reduced wear on shafts or sleeves.
Type 3. Black PTFE-Aramid Packing
Hybrid braid combining aramid strands with black PTFE-lubricated yarns.
Balanced Performance：Stronger than PTFE-coated aramid, smoother and more chemically stable than pure aramid.
Enhanced Heat Dissipation：The black PTFE lubricant provides better thermal stability and reduces glazing at high speeds.
Best Use Case：Chemical pumps, mixers, and process lines where both abrasion and corrosion resistance are required.
Industry Applications
Aramid packing—across all three variations—is widely chosen for equipment operating in demanding industrial settings, including：
- 1. Chemical Processing：Acids, solvents, brine, process fluids
- 2. Pulp & Paper Mills：Pumps handling pulp stock, bleaching chemicals
- 3. Power Generation：Boiler feed pumps, cooling systems
- 4. Mining & Slurry Transport：Abrasion-intensive slurry pumps
- 5. Oil & Gas / Petrochemical Plants：Hydrocarbon media, refinery equipment
- 6. Water & Wastewater Treatment：Centrifugal pumps, agitators, clarifiers
- 7. Food & Pharmaceutical Plants（for PTFE-based types）：Low contamination and cleaner sealing performance
About aramid packing FAQ：
Q1: When should I use PTFE Aramid packing instead of pure Aramid?
A: PTFE Aramid packing is ideal when you need the chemical inertness of PTFE but require the strength of aramid to prevent "cold flow" or extrusion under high pressure. Pure aramid fiber packing is better suited for purely abrasive environments where mechanical wear is the primary concern.
Q2: Are your aramid packing products compatible with food processing?
A: Our white aramid fiber packing is often used in industries where contamination must be avoided. However, for direct food contact, please consult our technical team to ensure the lubricants used meet your specific regulatory requirements.
