Gland packing JIC 3020 is a type of gland packing made from expanded graphite. The material is braided into a square cross-section, providing high flexibility and elasticity.
Specifications and Characteristics
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Material: Expanded graphite. There is also a variant reinforced with Inconel wire (JIC 3020-I) to improve heat resistance and thermal conductivity.
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Resistance: Graphite material is known for its excellent ability to withstand extremely high temperatures and pressures.
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Temperature range: From -200 °C to 600 °C (for the Inconel wire–reinforced variant).
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Maximum pressure: Up to 260 kgf/cm².
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pH range: Suitable for media with a pH range of 0 to 14.
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Properties: Excellent thermal conductivity, efficient heat dissipation, and self-lubricating characteristics.
Uses and Applications
Due to its strength and flexibility, JIC 3020 gland packing is suitable for sealing applications in equipment operating under high temperature and pressure. Typical applications include:
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Pumps
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Valves
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Various chemical plant equipment
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Systems handling steam, water, gas, or solvents
Important Notes
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Function: Serves as a restrictional device to control leakage rather than eliminate it completely. The friction between the shaft and the gland packing generates heat, and a small amount of leakage (approximately 40–60 drops per minute) acts as lubrication and cooling.
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Selection: For optimal performance, ensure that the gland packing material is selected according to the operating conditions such as temperature, pressure, and type of fluid.