Graphite packing is a type of high-performance sealing material used in various industrial applications to prevent leakage of fluids and gases in pumps, valves, and other equipment. It is made from flexible graphite, which offers excellent thermal conductivity, chemical resistance, and self-lubricating properties. This makes it ideal for high-temperature and high-pressure environments, ensuring reliability and longevity in demanding operations.
Our graphite packing comes in various grades and sizes to meet specific industrial needs. Below is a detailed table of parameters for different product models.
| Model | Temperature Range (°F/°C) | Density (g/cm³) | pH Resistance | Tensile Strength (MPa) | Applications |
|---|---|---|---|---|---|
| GP-100 | -400 to 1200°F / -240 to 650°C | 1.1 - 1.3 | 0 - 14 | 15 | General purpose valves, pumps |
| GP-200 | -400 to 2000°F / -240 to 1095°C | 1.2 - 1.5 | 0 - 14 | 18 | High-temperature reactors, boilers |
| GP-300 | -400 to 3000°F / -240 to 1650°C | 1.4 - 1.8 | 0 - 14 | 22 | Extreme environments, aerospace |
| GP-400 | -400 to 1500°F / -240 to 815°C | 1.0 - 1.2 | 2 - 12 | 12 | Chemical processing, acid services |
Proper installation is crucial for optimal performance. Follow these steps:
What is graphite packing used for?
Graphite packing is primarily used as a sealing material in rotating and static equipment like pumps, valves, agitators, and compressors to prevent leaks of fluids or gases under high temperatures and pressures.
How does graphite packing compare to other sealing materials?
Graphite packing offers better thermal stability, chemical resistance, and self-lubrication than materials like asbestos, PTFE, or aramid fibers. It performs well in extreme conditions where others may fail.
Can graphite packing be used in food processing applications?
Yes, certain grades of graphite packing are FDA-approved and suitable for food and pharmaceutical industries, as they are non-toxic and do not contaminate products.
What maintenance is required for graphite packing?
Graphite packing requires minimal maintenance. Periodic checks for wear and adjustment of gland tension are recommended. It typically has a long service life, reducing the need for frequent replacements.
Is graphite packing resistant to all chemicals?
Graphite packing is highly resistant to most chemicals, including acids, alkalis, and solvents, but it may not be suitable for strong oxidizing agents like nitric acid or bromine at high concentrations. Always check compatibility charts for specific chemicals.
How do I choose the right graphite packing for my application?
Consider factors such as temperature, pressure, chemical exposure, and equipment type. Refer to the product specifications table or consult with our technical team for personalized recommendations.
Can graphite packing be reused?
No, graphite packing is designed for single use. Once removed, it should be replaced with new packing to ensure a proper seal and avoid potential leaks.
Does graphite packing require lubrication?
No, graphite packing is self-lubricating due to the graphite material, which reduces friction and wear without additional lubricants.
What are the environmental benefits of graphite packing?
Graphite packing is made from natural graphite, which is abundant and recyclable. It produces no harmful emissions during use and is free from asbestos or other hazardous materials, making it an eco-friendly choice.
How long does graphite packing last?
The lifespan varies based on operating conditions, but it typically lasts longer than traditional packings, ranging from several months to years in well-maintained systems.
