PAN Fiber Packing

PAN Fiber Packing

Core Features

  • High-Performance Polyacrylonitrile (PAN) Base: Braided from high-strength synthetic PAN fibers. This material serves as a specialized “pre-carbon” fiber, offering significantly higher thermal stability and tensile strength than standard acrylic or vegetable fibers.
  • Multi-Stage PTFE Impregnation: Each individual strand is vacuum-impregnated with a high-density PTFE dispersion. This fills the microscopic voids within the fiber matrix, creating a dense, leak-proof barrier that resists “wash-out” even in high-pressure fluid service.
  • Exceptional Dimensional Stability: PAN fibers are engineered to resist shrinking and “cold flow.” This ensures the packing maintains a consistent square profile and a reliable sealing “bite” throughout its service life, reducing the need for frequent gland adjustments.
  • Low Friction & Heat Dissipation: The combination of the smooth PAN filament and the PTFE coating ensures a low coefficient of friction. This minimizes heat generation at the shaft interface, protecting the packing from “glazing” and the hardware from thermal stress.
  • Broad Chemical Resilience: Highly resistant to a wide array of industrial media, including oils, solvents, mild acids, and alkalis across a pH range of 2–12.
  • Non-Abrasive Hardware Protection: PAN fiber is a “soft-tough” material. It provides the mechanical stamina required for industrial pumping without the aggressive “shaft-cutting” characteristics of Aramid (Kevlar®) fibers.

At Kriloha Ltd., we recognize that modern industrial facilities require a “Bridge” packing—something stronger than standard synthetic fiber but more flexible and economical than pure Carbon. The Kriloha PAN Fiber Packing is our engineered answer for “High-Tenacity” universal service. As a premier global provider of industrial seals, Kriloha Gaskets has mastered the Square-Interlock Braid technology required to turn technical PAN yarns into a high-performance fluid barrier.

The engineering of our PAN series is based on Matrix Saturation. Unlike generic synthetic packings that only have a surface coating, our fibers are “deep-soaked” in PTFE before braiding. This ensures that as the packing wears, a fresh layer of PTFE is always available at the shaft interface. At Kriloha, we treat the braid with a secondary high-temperature break-in lubricant. This “Self-Lubricating Reservoir” is what allows Kriloha PAN packing to outperform standard acrylics in both thermal stamina and leak prevention.

Manufacturing this packing at Kriloha involves strict Tensile-Strength Verification. We ensure our PAN yarns meet rigorous industrial standards for fiber density and heat resistance. Whether you are sealing a high-speed water pump or a chemical agitator, Kriloha PAN Fiber Packing provides the mechanical invincibility and chemical agility your facility demands. By choosing Kriloha Ltd., you are investing in a “High-Cycle” technology that maximizes your equipment uptime while protecting your expensive rotating assets.

Primary Use Cases

  • General Purpose Centrifugal Pumps: The ideal choice for municipal water, cooling water, and mild chemical transfer where long-term reliability is the priority.
  • Wastewater & Sewage Treatment: Handling organic solids and grit-loaded fluids that require a tough, lubricated fiber to maintain a seal.
  • Paper & Pulp Mills: Used in stock lines and “white water” processing where chemical resistance and mechanical durability must be balanced with cost.
  • Agitators & Mixers: Providing a stable, low-maintenance seal for large-diameter shafts handling viscous media.
  • Mining & Slurry (Medium Duty): Capable of handling mildly abrasive fluids where a “shaft-friendly” alternative to Aramid is required.
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FAQs

What makes PAN fiber better than standard Acrylic?

PAN fiber is the technical precursor to carbon fiber; it has much higher heat resistance and tensile strength. It won’t become as brittle as standard acrylic when exposed to continuous high-temperature water service.

Is this packing “Shaft-Friendly”?

Yes. PAN is a non-abrasive synthetic. It provides a robust seal without the risk of scoring or wearing down 316 Stainless Steel, bronze, or chrome-plated shafts.

Can I use this for concentrated Nitric Acid?

It is highly resistant within the pH 2–12 range. For highly concentrated oxidizing acids (pH 0–1), Kriloha recommends our Pure White PTFE Filament packing.

Does it require a specific “leak-off” rate?

A slow, steady drip (approx. 10–12 drops per minute) is recommended during operation to ensure the PTFE can effectively dissipate frictional heat and maintain a lubricating film.

How do I install PAN Fiber Packing?

Cut the packing into rings with a 45° miter joint. Stagger the joints by 90°. During startup, tighten the gland nuts finger-tight and adjust slowly as the pump reaches operating speed to ensure a cool “seating.”

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