Ceramic Fiber Packing (Graphite Impregnated)

Ceramic Fiber Packing (Graphite Impregnated)

Core Features

  • Extreme Thermal Matrix: Braided from high-purity aluminosilicate ceramic fibers, offering a base temperature resistance of up to 1260°C (2300°F).
  • Deep-Soak Graphite Treatment: Unlike standard “white” ceramic packing, this variant is vacuum-impregnated with high-purity micronized graphite. This fills the microscopic voids in the mineral fiber, reducing porosity and improving the seal against gases and hot air.
  • Low Friction Sealing: The graphite acts as a permanent dry lubricant. This prevents the packing from sticking to metal surfaces and allows for easier installation and removal compared to raw mineral fibers.
  • Inorganic Structural Reinforcement: The yarns are typically reinforced with Stainless Steel wire or Inconel to maintain the braid’s “skeleton” at temperatures where standard glass reinforcements would melt.
  • Thermal Shock Resistance: Designed to withstand rapid “fire-to-cool” cycles without cracking or becoming brittle, making it ideal for intermittent furnace operations.
  • Chemical Stability: Highly resistant to most corrosive agents, including oils, solvents, and molten non-ferrous metals (pH range 2–12).

At Kriloha Ltd., we recognize that raw ceramic fiber—while thermally invincible—can be difficult to seal due to its high porosity. To achieve a “Gas-Tight” barrier at extreme temperatures, the fiber needs a filler. The Kriloha Graphite-Impregnated Ceramic Packing is our engineered answer for “Sealing-Grade” mineral containment. As a premier global provider of high-heat solutions, Kriloha Gaskets has mastered the Saturant-Bonding technology required to lock graphite deep into the mineral braid.

The engineering of our Graphite-Ceramic series is based on Enhanced Density. The graphite serves two purposes: it blocks the leak paths between the fibers and provides a lubricating “slip-plane.” This ensures that when you tighten a furnace door or a valve gland, the packing conforms to the metal surface without “shredding” the ceramic yarns. At Kriloha, we utilize a specialized high-purity graphite that won’t “carbonize” or burn off prematurely, ensuring the seal remains effective throughout the heat cycle.

Manufacturing this packing at Kriloha involves strict Wire-Insert Calibration. We ensure the internal SS wire reinforcement is perfectly centered in the yarn to provide maximum tensile strength at glowing heats. Whether you are sealing a high-vibration exhaust manifold or an industrial smelting runner, Kriloha Graphite-Impregnated Ceramic Packing provides the thermal invincibility and structural stamina your facility demands. By choosing Kriloha Ltd., you are investing in a “High-Cycle” technology that maximizes your energy retention and protects your heavy industrial hardware.

Primary Use Cases

  • High-Temperature Valve Stems: Providing a static or slow-moving seal for soot blowers and high-heat steam valves.
  • Exhaust Ducting & Manifolds: Sealing flange joints in gas turbines and heavy engine exhaust systems where vibration and extreme heat are constant.
  • Industrial Oven & Kiln Doors: Used in heavy-duty brick kilns and metal-treating furnaces where a lubricated, non-stick seal is required.
  • Boiler Access Ports: Sealing inspection hatches and “man-way” covers in high-pressure thermal power systems.
  • Molten Metal Launders: Acting as a flexible gasket for troughs and lids used in aluminum and zinc smelting.
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FAQs

Does the graphite rub off during installation?

A small amount of “graphite dust” is normal during handling. However, Kriloha’s vacuum-impregnation process ensures that the majority of the lubricant is locked within the core of the braid, providing long-term performance.

Can I use this in high-speed centrifugal pumps?

No. Like all ceramic packings, this material is abrasive and lacks the mechanical flexibility for high-speed rotation. It is designed for static, semi-static, or slow-moving valve applications only.

What is the benefit of Graphite over standard White Ceramic?

The graphite makes the packing denser and more “leak-proof” against air and gases. It also prevents the packing from “fusing” or baking onto the metal door flange, making maintenance much easier.

Is this packing safe for contact with food?

No. Due to the mineral fibers and graphite lubricants, this is strictly an industrial-grade product. For food-grade high-heat applications, please contact Kriloha for specialized PTFE-based solutions.

How do I choose the right reinforcement (Glass vs. Wire)?

Glass Reinforced: Best for temperatures up to 650°C and applications requiring electrical insulation.

SS Wire Reinforced: Mandatory for temperatures up to 1260°C and applications requiring maximum structural integrity.

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