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Graffiti packing
Die-formed Graphite Packing is an advanced industrial sealing system made from pure, dense, molded graphite. These packings are designed using flexible graphite that is resistant to extremely harsh conditions and are used in sensitive equipment such as industrial valves, high-pressure control valves, power plant valves, and reactors.
Due to its molded shape and uniform density, this type of packing provides a very effective, stable, and long-lasting seal and performs excellently against steam leaks, corrosive gases, high temperatures, and high pressures.
Applications of graphite packing
High pressure valves and industrial valves
Steam turbines and compressors
Petrochemical reactors and refineries
Equipment exposed to superheated steam
Toxic or corrosive gas transmission lines
Safety and flow control valves in the oil, gas, steel and power plants industries
Additional explanations of graffiti packing
Very high temperature tolerance: up to 550°C and in some cases even higher
High pressure resistance: up to 200 bar (depending on structure and internal reinforcement)
Non-sticking to shaft and valve body: easy separation without damage to equipment
Uniform density: prevents leakage even under thermal shock conditions
Chemical stability: resistant to most acids, bases, oils and solvents
High thermal conductivity: fast temperature transfer, suitable for hot equipment
Can be used in vacuum, pressurized or atmospheric environments
| Molded packing type | Features and application |
|---|---|
| Molded pure graphite | Suitable for general high temperature applications |
| Graphite packing reinforced with metal wire | More resistant to pressure and vibration, suitable for steam valves |
| Graphite with anti-oxidation coating | Resistant to oxidation at high temperatures |
| Molded packing with PTFE | Less friction and smoother sealing for precision valves |
Shape: Die-formed Rings with square or rectangular cross-section
Standard dimensions: From 10 mm inner diameter to over 300 mm (customizable)
Operating temperature range: From -200 to +650 °C (in non-oxidizing environment)
Permissible working pressure: Up to 200 bar depending on reinforced or plain type
Density: Between 1.2 and 1.8 g/cm3 (adjustable)
Stable and long-term performance in severe operating conditions
Reduces leakage, reduces repairs and production line downtime
Compatible with a wide range of chemicals and gases
Easy installation compared to conventional graphite threads
Reduces maintenance costs and increases industrial safety
No need for lubricants or grease in most cases
Conclusion
Molded graphite packing is a professional and reliable solution for sealing in sensitive equipment and heavy industries. The correct selection of this type of packing based on the working conditions (temperature, pressure, fluid) can extend the life of the equipment, minimize leakage and greatly improve the efficiency of production lines. To achieve better performance, the use of reinforced or specially coated packings is recommended in certain conditions.
Frequently Asked Questions about Graffiti Packing (FAQ)
The molded type is made of compressed graphite in the form of integral rings and is designed for a more precise, stronger, and more durable seal; while the woven type is in the form of tape or thread and is more flexible but less durable.
In these environments, packings with anti-oxidation coatings or more resistant compounds should be used, as graphite may oxidize at high temperatures and in the presence of oxygen.
It is placed inside the valve housing as separate or integrated rings. Due to the molded structure, installation is very accurate, fast and without uneven compression.
