Carbon Fiber Braided Packing

Taifno is a professional and reliable manufacturer of carbon fiber braided packing. This high-performance product is designed for demanding operating conditions, with a temperature range of -240°C to +350°C and pressure capabilities up to 200 bar; it is resistant to a wide range of chemical media across the pH 0–14 range (with the exception of strong oxidizing agents).

What Is Carbon Fiber Packing?

Carbon Fiber Braided Packing is braided from high-strength carbon yarns (polyacrylonitrile-based, carbon content over 90%) and impregnated with PTFE dispersion and graphite lubricants.

The carbon fibers provide exceptional tensile strength, thermal conductivity, and dimensional stability. The PTFE/graphite impregnation reduces friction, prevents shaft scoring, and adds chemical resistance.

How it works:

Carbon fibers: Provide strength, thermal conductivity (dissipates frictional heat), and chemical stability at high temperatures

PTFE/graphite impregnation: Reduces friction, prevents shaft scoring, and enhances chemical resistance

Interlock braid: Provides flexibility, uniform shaft contact, and reliable sealing under pressure

Why Choose Carbon Fiber Packing?

The Middle Ground: Where Others Fail

Comparison & Selection Guide

Carbon Fiber vs PTFE vs Graphite vs Aramid/PTFE

Quick Selection Guide

Primary Applications

Real-World Applications

Case Study 1: Refinery Hot Oil Pump — 3x Longer Life

Client: Large refining company handling hot oil at 280°C

Challenge: PTFE packing was being replaced every 4-6 months. Operating temperature was 280°C — above PTFE's continuous service limit. Packing was softening and extruding, causing leaks and frequent shutdowns.

Solution: Installed carbon fiber packing with PTFE/graphite impregnation. High thermal conductivity dissipated frictional heat. Carbon fibers retained strength at 280°C.

Result: Packing lasted over 18 months — 3x longer. Zero leakage. Maintenance intervals extended from months to years.

Annual cost savings: $12,000 per pump.

Case Study 2: Chemical Plant — pH 0-14 Compatibility

Client: Chemical plant pumping multiple chemicals across full pH range

Challenge: One day acid, the next caustic. PTFE packing worked chemically but couldn't handle the heat generated at high speeds. Graphite packing oxidized in acids.

Solution: Carbon fiber packing with pH 0-14 chemical resistance and high thermal conductivity. Handled both chemicals and heat.

Result: Packing performed reliably across all chemical services. Heat dissipation eliminated shaft scoring. No replacements in 12 months.

Note: Actual case results vary by application conditions. Contact us for application-specific recommendations.

Technical Specifications

Carbon Fiber Packing Properties

Available Grades

Quality Assurance

High-Quality Carbon Fiber — Premium carbon yarn from leading manufacturers

PTFE/Graphite Impregnation — Thorough treatment for consistent lubrication and chemical resistance

Precision Braiding — Interlock braided construction for uniform density and flexibility

Full Traceability — Every batch traceable from raw material to finished packing

Tested Performance — Temperature, pressure, and speed ratings verified to industry standards

FAQ

Q: When should use Carbon Fiber Braided Packing?

A: Use it when you need a packing that handles heat, pressure, and chemicals together, the middle ground where PTFE fails (above +260°C) and graphite is overkill (below +350°C).

When to use it: +260°C to +350°C, high speed (up to 25 m/s), high pressure, hot oils, pH 0-14 chemicals.

When NOT to use it: Strong oxidizers at high temperature (nitric acid, chlorine), carbon oxidizes.

Clean chemicals below +200°C, PTFE is cheaper.

Extreme heat above +350°C, graphite is better.

Food/pharma, PTFE is FDA-compliant, carbon is not.

Q: Carbon fiber vs. PTFE vs graphite, which one saves you money?

A: PTFE costs least upfront but fails above +200°C. Graphite costs most and handles +650°C, but if your service is below +350°C, you are overpaying for capability you do not need.

Carbon fiber is the sweet spot: Higher upfront than PTFE, lower than graphite, but covers the tough middle range where PTFE fails and graphite is unnecessary.

Quick rule:

Below +200°C, clean media → PTFE.

+260°C to +350°C, chemicals, high speed → Carbon fiber.

Above +350°C, steam → Graphite.

Q: What are the limits and the most common mistakes?

A: Temperature: -240°C to +350°C.

Pressure: up to 30 bar (rotary), up to 200 bar (reciprocating/static).

Speed: up to 25 m/s (rotary).

Chemical: pH 0-14, except strong oxidizers at high temperature (nitric acid, chlorine) which attack carbon.

Three common mistakes:

(1) Using carbon fiber in strong oxidizers: carbon oxidizes. Use PTFE or graphite instead.

(2) Over-tightening: excessive compression damages the packing and increases friction heat. Use a torque wrench.

(3) Shaft too soft: carbon fiber is tough; ensure shaft hardness ≥45 HRC or use a shaft sleeve.