Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of ptfe lined rubber expansion joint for corrosive chemical piping systems in China. If you're going to buy ptfe lined rubber expansion joint for corrosive chemical piping systems made in China, welcome to get more information from our factory. We also accept customized orders.
Structure
The carbon fiber packing features a braided square cross-section formed by interwoven high-purity carbon fiber strands. This dense braiding structure ensures uniform density and structural integrity under varying mechanical loads. The continuous fibers interlock securely, preventing unraveling even in high-vibration environments. The multi-layer braided construction provides excellent dimensional stability, ensuring the packing maintains its square profile even during demanding compression cycles, making it a robust sealing solution.
Material
The core material consists of high-purity carbon fibers impregnated with graphite particles and special non-petroleum-based lubricants. This dual-material construction combines the high tensile strength of carbon with the excellent thermal conductivity of graphite. The special lubricants continuously migrate to the surface, reducing friction against the shaft. This carefully balanced composition ensures the packing delivers consistent performance across a wide range of operating conditions, from standard pumps to the most demanding chemical processing environments.
Function
The packing effectively seals rotating shafts while absorbing minor vibrations and shaft runout. It withstands extreme temperatures ranging from -200°C to +455°C while resisting aggressive chemicals. The flexible braided structure compresses evenly under gland pressure, providing a tight, leak-free seal in both pumps and valves. Its inherent thermal stability prevents cold flow and extrusion under intense pressure, ensuring it maintains a complete, unbroken sealing ring even against severe chemical attack and high-speed rotational forces.
Performance
The material demonstrates exceptional wear resistance and low friction properties, extending the life of both the packing and the pump shaft. It maintains excellent dimensional stability even after prolonged exposure to high temperatures, resisting hardening and brittleness. Its superior self-lubricating nature reduces heat generation, allowing continuous operation without frequent maintenance. Proven to outperform standard PTFE or Aramid packing in abrasive environments, it delivers reliable leak-proof performance while significantly reducing total equipment ownership costs over its long service life.
Installation
This packing can be easily cut to length with a sharp knife and installed as individual rings with 45-degree diagonal cuts. It requires no special tools or welding and conforms directly to the shaft. The flexible, non-abrasive nature allows for safe installation without damaging the shaft surface. It fits perfectly into standard gland chambers without adjustment. Even experienced operators can achieve a proper seal with standard gland adjustment, ensuring reliable performance without lengthy start-up procedures or specialized training.
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