High-performance Sealing: Aramid Fiber Packing

Aramid fiber packing is a high-performance engineering sealing material made from aromatic polyamide fibers through a special weaving or impregnation process. This material offers exceptional strength, excellent temperature resistance, chemical stability, and wear resistance. It is widely used for sealing rotating or reciprocating equipment such as pumps, valves, and reactors operating under high-temperature, high-pressure, and highly corrosive conditions.

High-performance Sealing: Aramid Fiber Packing

1.Key Features of Aramid Fiber Packing

l Excellent High-Temperature Resistance

Long-term operating temperature range -100°C to +300°C, with a short-term operating temperature of 500°C, making it suitable for environments with high-temperature steam, hot oil, and other media.

l Excellent Chemical Stability

Resistant to most acids, alkalis, organic solvents, and oils, including corrosive media such as hydrofluoric acid, diesel, and lubricating oil.

l Extremely High Mechanical Strength

Extremely high tensile strength and excellent compressive resistance, making it less susceptible to plastic deformation and maintaining a long-lasting seal.

l Low Wear, Long Life

Self-lubricating properties minimize wear on shafts and valve stems, significantly extending equipment lifecycles.

l Environmentally Friendly and Safe

Asbestos-free, it meets international environmental standards and can be used in the food, pharmaceutical, and other industries.

l Excellent Machinability and Installation

Supports various application methods, including cutting, winding, and molding, for easy installation.

2.Common Product Forms and Specifications

Item Description
Cross-sectional Shape:	Square, rectangular, braided, etc.
Cross-sectional Dimensions:	3mm-50mm (Customization Available)
Length: Packing:	Commonly available in 3-100 meter/rolls; gaskets can be customized.
Color:	Fiber color (light yellow), golden yellow, black, etc.
Reinforcement:	Can be impregnated with PTFE, graphite, silicone oil, etc. to enhance lubrication and sealing performance.

3.Typical Technical Parameters

Performance	Unit	Typical Value
Density	g/cm³	1.43 ~ 1.45
Continuous Operating Temperature	°C	-100 ~ +300
Tensile Strength	MPa	≥ 200
Acid and Alkali Resistance Range(pH)	—	2 ~ 13
Coefficient of Friction	—	0.15 ~ 0.30
Thermal Conductivity	W/m·K	0.04 ~ 0.06

4.Main Applications

Petrochemical: Pumps, agitators, reactors, and valve seals

Power and energy: Boiler feed pumps, high-temperature and high-pressure valves

Shipbuilding: Engines, propellers, and pump and valve sealing systems

Food and pharmaceutical: Seals for aseptic equipment, mixing, and filling systems

Water treatment systems: Seals for high-pressure pumps, mixers, and pipe flanges

Aramid fiber packing has become an important choice in modern industrial sealing due to its balanced performance and wide applicability. Whether upgrading traditional industries or applying it in emerging fields, it provides reliable, long-life sealing solutions.

If you would like to find out more about Aramid fiber packing or to purchase other products, please contact us at sales@weitengroup.com, wwww.weitengroup.com.