Graphite Ring
Company Profile
Huixian Hongshun Graphite Co., Ltd. focuses on graphite design and processing. The company has more than ten years of experience in graphite processing. The company has a series of completed production systems for design and processing.
Why Choose Us
Dedicated Team
Our success is not solely attributed to our product range; it's also a result of our exceptional team. We take immense pride in our dedicated and passionate employees who work tirelessly to ensure your needs are met.
Service Details
Hongshun has grown together with its customers based on their confidence and trust. Its invaluable customers attest to its reliability.
Products Developed with Customer Feedback
Hongshun commitment to customer satisfaction is the basis of its powerful and stable products.
Advantages of Graphite Ring
Excellent conduction.
Heat conduction.
Corrosion resistance.
Small expansion coefficient.
Self-lubricating and machining properties.
Sufficient mechanical strength and impact resistance.
Easy to machined and can be processed into various geometrical shapes.
Graphite rings and the graphite seal ring adopt flexible graphite tape or flexible graphite in woven packing and are molded into ring products of different sizes. Suitable for hot water, high temperature, high-pressure steam, heat exchange liquid, nitrogen, organic solvent, hydrocarbon, low-temperature liquid, and other media. Usually, they are used for aluminum bars casting after ceramic foam filters, and the launder system.
Application of Graphite Ring
High temperature, high pressure steam.
Hot water, oil, heat exchange fluids.
Low-temperature liquids.
High temperature and pressure liquid valves.
Organic and inorganic fluids except for strong oxidizers such as nitric or sulphuric acid.
High temperature and pressure gas valves.
High temperature joints.
Packing rings, turbine rings, and piston rings.
Special vacuum furnace applications.
●Excellent thermal stability: Resistant to low and high temperatures (-200 to 650 °C) in oxidation environments and 3000°C in inert or reducing environments.
●Chemically inert: Resistant to fluids with a pH range of 0-14 (except strong oxidizers such as nitric or sulphuric acid).
●Low coefficient of friction.
●Ease of installation.
Graphite Ring Materials for Mechanical Seals Are Roughly Divided into the Following Categories
● Roasted graphite, in a sense, roasted graphite is divided into hard carbon graphite and soft electrochemical graphite. They are made of petroleum carbon black and soot carbon black mixed with tar, pitch, etc., which are crushed and pressed into green bodies, which are roasted at high temperatures.
In addition to the different components of the material, the main difference between the two is that the latter needs to be graphitized at a high temperature of 2400-2800 ℃.
When graphite is fired, pores (10% to 30% pores) appear due to the volatilization of volatile substances in the binder and the polymerization, decomposition, and carbonization of the binder.
When used as a sealing ring, there will be permeability leakage, and the strength is low, so it needs to be impregnated to fill the gap and strengthen, that is, it becomes an airtight product after impregnation treatment, and the strength is also improved.
However, the temperature and corrosion resistance properties have decreased to varying degrees. There are three main classes of impregnants used: organic resins, inorganics, and metals.
● Resin-bonded graphite, is to pulverize the sintered graphite, use phenolic resin or epoxy resin as a binder, and then press and sinter it into a product after mixing. The resin in the matrix becomes carbon particles after sintering, so it is gas-impermeable graphite. It has poor thermal conductivity and a large linear expansion coefficient; it is suitable for mass production and has a low cost;
● It is mainly used for low-load sealing such as automobile cooling water pumps and household appliances.
● Pyrolytic graphite, domestic pyrolytic graphite is pyrolyzed with propylene and other hydrocarbons at a high temperature so that carbon vapor penetrates into the pores of the carbon-graphite body, which plays a role in blocking pores and forms high-density, few pores, and low permeability.
● Pure carbon graphite material. Its porosity is less than 1%, its compressive strength is 290MPa, its hardness is 70-75HS, and its linear expansion coefficient is 0.36×10 minus 6 degrees Celsius. Pyrolytic graphite is free of organics and metals and is suitable for high-temperature and strong corrosion conditions. Since it is not suitable for mass production, the cost is high.
Tips for Best Graphite Ring Maintenance
If graphite ring are not maintained, leaks can occur, and water and other fluids can enter the appliance or application, and even product in the mix!
If this happens, damage can occur to internal parts and mechanisms, causing deployment failings, potential false readings, and even corrosion.
Maintenance of graphite ring is often the most overlooked and miss-serviced part of an appliance.
Yet due to the function they perform, they really shouldn’t be!
Cleaning graphite ring
To help prevent these problems from occurring graphite ring s need to be checked and serviced regularly.
This is often carried out when replacing or removing parts, where graphite ring providing the seal should be checked as part of this operation.
Checking the graphite ring in question for contamination and cleaning these if any grit, hair, or debris is found.
If there is any evidence of cracks or corrosion on the graphite ring , then these should be replaced for new as soon as possible, as it will only lead to further problems later down the line.
To remove an graphite ring
Drive a screwdriver or pick straight into the graphite ring , pulling it from its recess.
Once it’s removed, clean both the graphite ring and the area around the graphite ring , including the flanges and grooves where the graphite ring are seated, discarding any excess grease/lubricant, and dirt and debris.
Note: Only water and a mild detergent should be used on the graphite ring. And the graphite ring should be dried entirely before reinserting – also; it’s important not to stretch the graphite ring as you’re drying it.
Purchase your new graphite ring from specialist graphite ring suppliers in the UK, and to reinstall the new graphite ring use a small amount of grease on the ring to manoeuvre it slowly and carefully back into place, making sure that it doesn’t twist and roll.
Do not, and we repeat, do not use too much grease. This can collect further dirt, compromise the seal, and diminish the waterproofing capabilities, potentially causing further leaks.
You should also use the right silicone grease for the graphite ring that is being used – Specialist Sealing Products can help with any questions you may have in this area.
If when you insert the graphite ring , it seems slightly misshapen, leave it for a minute or two and then try to work it back into position.
Before sealing the entire application and putting all of the parts back together again, run your fingers over the area to make sure that the graphite ring is seated correctly, and nothing is in the way of the two surfaces or indeed anything interfering with the seals.
Storing graphite ring
Graphite ring should be stored away from direct sunlight and ideally in an airtight bag.
Graphite ring do go brittle over time, hence using a specialist graphite ring supplier in Leeds is often key. An graphite ring s will be new, in stock, and in good condition!
Quality Replacement Parts: Graphite Ring
When you can't wait for long lead times on OEM rings, Carbon can provide you with the seal rings that you need quickly so you can get back to work.
The graphite ring functions as a pressure breaker in steam turbines used to power pumps and compressors, moving fluids through a piping system or to power generators to make electricity.
The turbine is connected through a shaft to a pump or generator. As steam enters the inlet end of the turbine, it passes through a series of multi-bladed vanes on a centrally rotating spindle. As the steam pressure pushes against and passes by the vanes and exists the turbine, it forces the shaft to rotate. The rotating shaft, in turn, drives the connected equipment.
The graphite ring are normally used in groups of two or more and are situated toward the end of the turbine housing. They are manufactured to allow a specific amount of clearance over the diameter of the shaft. The amount of clearance is dependent on the temperature and pressure of the steam passing through the turbine. Each ring in the series functions as a pressure breaker ring and a seal ring.
As the steam tries to push its way down the shaft, it forces the face of the graphite ring against the housing wall, creating a seal. The small amount of clearance between the graphite ring and the shaft allows a portion of the steam pressure down as it nears the end of the housing. As the steam reaches the final ring in the series, the pressure has been broken down sufficiently to make that ring the primary seal between the turbines'inner working and the atmosphere outside.
Features of Graphite Ring
Graphite ring has the characteristics of expanded graphite and can withstand severe alternating temperature and pressure. It is an ideal packing for valves and various static seals. It can be used alone or combined with a 244 high carbon fiber packing end rings to prevent packing extrusion.
The graphite ring is made of flexible graphite tape or flexible graphite packing, which is molded into ring products of different sizes. Suitable for hot water, high temperature, high-pressure steam, heat exchange liquid, nitrogen, organic solvent, hydrocarbon, low-temperature liquid, and other media. Used for compressor, pump, valve, chemical instrument, instrument, etc.
Graphite Sealing Ring – An Essential Part for Extending the Lifespan of Mechanical Equipment Seal Parts
●Low coefficient of thermal expansion and low friction coefficient.
●Excellent self-lubrication.
●High thermal conductivity and thermal stability.
●Excellent sealing performance and machinability.
●Good corrosion resistance and oxidization resistance.
Graphite sealing ring is a component used for mechanical seals. Its high strength, low friction, high temperature and high pressure resistance and self-lubrication make it an ideal choice for dynamic and static sealing ring materials. It is made from high purity graphite or impregnated resin/metal graphite to achieve superior performance.
Graphite sealing rings are divided into static and dynamic sealing rings, with static sealing rings installed on fixed components and dynamic sealing rings installed on rotating shafts. These sealing rings are usually used in applications such as pumps, compressors, and turbines to form a sealing interface that prevents liquid or gas leakage. Therefore, it puts high requirements on the performance of sealing rings, including strength, hardness, porosity, lubrication, and heat resistance.
Features
●Self-lubrication, low friction.
●High tensile strength and good thermal shock resistance.
●High conductivity, low coefficient of thermal expansion.
●Good chemical & corrosion resistance.
●Excellent high temperature stability.
Certificate
Our Factory
Huixian Hongshun Graphite Co., Ltd. focuses on graphite design and processing. The company has more than ten years of experience in graphite processing. The company has a series of completed production systems for design and processing.
FAQ
We're well-known as one of the leading graphite ring manufacturers and suppliers in China. Please feel free to buy high quality graphite ring made in China here from our factory. For customized service, contact us now.
graphite polished ring, graphite iridescent ring, graphite imitation ring if it imitates a certain style or material