Price of high-temperature and high-pressure graphite packing

Price of high-temperature and high-pressure graphite packing

The sealing packing (packing) made of flexible graphite wire woven through different weaving processes such as core weaving and sleeve weaving is more stable and safe in sealing performance. It is a composite component that solves sealing problems. And according to the corrosive environment and user needs, the packing (packing) can also be treated with corrosion inhibitors to enhance its anti-corrosion function. Execution standard: GB/T7370-94. Suitable for almost all media such as hot water, steam, oil, heat exchange liquids, acids, bases, ammonia, hydrogen, organic solvents, hydrocarbons, low-temperature liquids, etc. Applied to equipment and devices in industries such as petroleum, power generation, chemical, light industry, and pharmaceuticals. The graphite disc clamp copper wire is high, and the PTFE impregnated flexible graphite disc root is made of pure graphite disc root. The expanded graphite braided disc root is refined from industrial grade expanded graphite impregnated with PTFE mixture and inert lubricant, which is corrosion-resistant, highly thermally conductive, self-lubricating, and quickly dissipates heat. Can be used in industries such as food, pharmaceuticals, wine making, petroleum, chemical, energy, papermaking, printing, and fuel; Pumps, valves, flanges, etc. are often used in rotating equipment. Suitable for non abrasive fluid media such as steam, fuel, oil, acid, alkali, solvents, etc.

The packing is severely worn and burned, causing the gap to rapidly increase, resulting in inadequate sealing performance of the pump and leading to sealing failure. In fact, using a dynamic seal with a packing only reduces the amount of leakage as much as possible, and it is not possible to prevent any leakage. As long as the shaft starts to rotate and friction occurs with the packing, a gap between the packing and the shaft is created, and leakage begins. For circulating pumps, due to the external high-pressure sealing water, only the sealing water entering the sealing chamber leaks, not the sealed medium. For a certain amount of leakage, not only is it allowed, but it is also beneficial. It has become both a lubricant for the friction surface and a coolant for reducing the temperature rise of the packing, shaft, and stuffing box. It is very beneficial for maintaining the sealing performance of the packing. According to theoretical calculations and practical experience, a leakage rate of around 60 drops/min is appropriate for the sealing of the circulating pump packing, which can maintain the normal operation of the packing seal for a long period of time. Require the circulation pump to have reliable sealing performance and long service life during operation.
The high-purity graphite core of pure graphite packing treated with corrosion inhibition and the special high-temperature fiber reinforced with densely woven nickel wire greatly improve the anti extrusion ability of graphite, making it more suitable for steam sealing under high temperature and high pressure than traditional graphite packing. According to customer requirements, it can be molded into graphite packing rings for steam valves.
The graphite packing ring is made by processing and weaving flexible graphite composite coils. Mainly used for static and dynamic sealing at valve, pump, and pipeline connections. This product has a wide range of applicability, including high temperature resistance, strong acid and alkali resistance, high temperature resistance, long service life, self-lubricating, and bottom friction coefficient. It is particularly suitable for use in harsh medium conditions. The valve graphite packing has excellent heat and cold resistance. Flexible graphite has almost no change in its physical properties from ultra-low temperature of -270 degrees to high temperature of 3650 degrees (in non oxidizing gas), and can also be used up to around 450 degrees in air; The valve graphite packing has excellent chemical corrosion resistance. Flexible graphite is resistant to corrosion in almost all inorganic and organic media, except for strong oxidizing media such as aqua regia, high-temperature dichromate, and ferric chloride; The valve graphite packing has good self-lubricating properties. Flexible graphite, like natural graphite, is prone to sliding between layers under external forces, thus possessing lubricity, good wear reducing properties, and low friction coefficient; The rebound rate of valve graphite packing is high. Before installing new packing, the inner wall of the packing cylinder and the surface of the pump shaft (valve stem) should be cleaned, and the packing should be kept clean during installation. When the shaft or sleeve experiences radial circular runout due to eccentricity in manufacturing, installation, etc., it has sufficient floating performance, and even if graphite cracks appear, it can fit well, ensuring a tight fit and preventing leakage. The valve graphite packing has low requirements for the flange surface, and a small pre tightening force can achieve sealing effect. It is easy to cut and is a relatively economical and practical sealing material.

Price of high-temperature and high-pressure graphite packing