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Polished graphite ring

产品详情

Product Name: Polished Graphite Ring
Summary Overview
The polished graphite rings are mainly made of high-purity graphite material, which are formed through precise molding and surface polishing processes. This material is renowned for its excellent electrical conductivity, high-temperature resistance, and self-lubricating properties. By utilizing advanced hot-pressing molding and precise polishing techniques, these graphite rings can be manufactured into products with extremely high dimensional accuracy and excellent surface finish, ensuring their stable performance even under various extreme conditions. We are a reliable manufacturer of graphite products in China, dedicated to producing high-quality polished graphite rings. Our products always maintain excellent physical properties, cost competitiveness, and can be customized according to different customer application requirements.
Product Details
The polished graphite rings can be manufactured in various specifications and sizes according to different application requirements, and can also be customized based on the precision requirements of customers. It has extremely excellent surface finish, with no scratches, pits or impurities on the surface, ensuring a perfect seal and smooth operation between the mating parts. The graphite material itself has excellent chemical stability and corrosion resistance, and can work for a long time in harsh environments such as high temperature and high pressure without performance degradation. Our polished graphite rings strictly control the purity and density of the materials during the manufacturing process to ensure the consistency and reliability of the products.
Product Parameter Specification Table
Parameter Categories

Specific specifications

Explanation

Manufacturing process

Hot pressing molding, precision polishing

Ensure uniform product density and a smooth surface.
Equipment / Machinery

Hot press machine
Precision polishing machine CNC lathe
Cleaning and drying equipment

Advanced equipment ensures precision and quality.
Materials

High-purity graphite (carbon content ≥ 99.5%)

Excellent electrical conductivity and high-temperature resistance properties
Surface treatment

Precision polishing (Ra ≤ 0.8 μm)

Smooth and flawless on the surface
Product shape

Circular shape, customized shape

Customized according to customer requirements
Dimension accuracy

±0.05mm

High precision coordination
Surface roughness

Ra 0.4 - 0.8 μm

Super-smooth surface
Density

1.7 - 1.9 grams per cubic centimeter

Uniform and dense structure
Electrical conductivity

≥100 S/m

Excellent electrical conductivity
Operating temperature

-200°C to +450°C

Works over a wide temperature range
Industry Application

Electricity, electronics, chemical engineering, metallurgy

Multi-domain application
Product features and applications
With the continuous advancement of industrial technology, the performance requirements for sealing materials and conductive components have become increasingly higher. The polished graphite ring, with its excellent surface smoothness, precise fitting performance and stable chemical properties, demonstrates great potential in numerous high-end application fields. We are a reputable manufacturer of graphite products, dedicated to producing polished graphite rings with high precision, high strength and high purity. We have a strict quality control system and adopt advanced production processes and testing equipment to ensure that every product meets the highest industry standards.
Core advantages list
The outstanding surface finish and precise polishing process ensure that the surface of the graphite ring is as smooth as a mirror, with a surface roughness controlled within the range of Ra 0.4-0.8 μm. There are no scratches, blemishes or impurities, effectively reducing the friction coefficient and prolonging the service life.
Precise coordination performance, strict dimensional control (±0.05mm) and excellent surface quality ensure a perfect seal between the graphite ring and the mating parts, effectively preventing leakage and guaranteeing the stable operation of the system.
Excellent sealing performance. The graphite material itself has excellent self-lubrication and plasticity. After precise polishing, it can achieve reliable sealing effect without the use of any sealant, and is particularly suitable for high-demand sealing applications.
High material purity uses high-purity graphite materials (with a carbon content of ≥ 99.5%) to ensure that the product has stable chemical properties, excellent conductivity, and high-temperature resistance, making it suitable for various demanding working environments.
The excellent mechanical strength is achieved through the hot pressing molding process. The graphite ring has a uniform and dense structure, with high mechanical strength and being resistant to fragmentation. It can maintain a stable shape under harsh conditions such as high pressure and high temperature.
The wide temperature range adaptability enables normal operation within the temperature range of -200°C to +450°C, with excellent resistance to thermal shock. It is suitable for various extreme temperature application scenarios.
Excellent electrical conductivity with a conductivity of ≥ 100 S/m. Its outstanding electrical properties make it suitable for various electrical applications such as electric heating and conductive contact.
Chemical stability possesses excellent resistance to chemical corrosion such as acid, alkali, and organic solvents, enabling it to operate in various chemical environments for a long time without any performance changes.
Technical capability details
Processing material capability
We have a strong material processing capability and can select the appropriate graphite materials according to different application requirements.
Material type

Features and Applications

Advantages

High-purity graphite

Carbon content ≥ 99.5%

Excellent electrical conductivity and high-temperature resistance
Fine-grained graphite

Uniform in structure and high in strength

High precision processing performance
Isostatic pressure graphite

Isotropic, high strength

Strong ability to shape complex shapes
Impregnated graphite

Low porosity and high strength

Excellent sealing performance
Surface finish processing capability
We have a variety of surface treatment processes to ensure that the polished graphite rings meet the highest surface quality standards:
Processing technology

Handling method

Core Feature
Precision mechanical polishing

Use polishing pastes of different granularities to polish gradually.

The surface roughness can reach Ra 0.4 μm.
Chemical polishing

Carry out surface treatment using chemical polishing solution

Achieve uniform and consistent surface luster
Laser polishing

Laser beam scanning the surface

Precisely control the removal amount, without mechanical stress
Ultrasonic cleaning

Ultrasonic vibration cleaning

Completely remove surface impurities and particles
Tolerance control capability
We have a strict tolerance control capability, ensuring that every product meets the precision requirements of our customers.
Dimension accuracy: ±0.05mm (can reach ±0.02mm)
Concentricity: ≤ 0.03mm
Verticality: ≤ 0.05mm
Surface roughness: Ra 0.4 - 0.8 μm
Accepted technical document format
We can handle and process various technical document formats, ensuring the accurate communication of customer requirements:
3D file formats: STP, STEP, LGS, XT, IGES
2D drawing format: AutoCAD (DXF, DWG), PDF
Sample: Accept physical samples for reverse engineering
Quality Assurance System
We strictly adhere to the ISO9001:2015 quality management system and have obtained international certifications such as SGS, RoHS, and REACH, ensuring that every product meets the highest quality standards.
Application Area Presentation
The polished graphite rings, due to their excellent performance, have been widely applied in various fields:
The power industry
Used for sealing and conducting contact in electrical equipment such as high-voltage switches, circuit breakers, and contactors. Ensuring reliable electrical insulation and mechanical sealing, it enhances the operational stability and service life of the equipment.
Electronic industry
Used for sealing and supporting high-precision electronic components such as semiconductor manufacturing equipment, vacuum tubes, and electron tubes. It provides an ultra-clean vacuum environment to ensure the normal operation of electronic components.
Chemical industry
Sealing components for chemical equipment such as pumps, valves, reactors, etc. Excellent corrosion resistance and high-temperature resistance ensure reliable operation in various chemical media and effectively prevent leakage.
Metallurgical industry
Used for sealing and sliding components of high-temperature process equipment such as metal smelting, casting, and heat treatment. Can withstand extreme temperatures and harsh working conditions to ensure the smooth progress of the production process.
Vacuum technology
Used for vacuum pumps, vacuum chambers, vacuum sealing rings and other vacuum equipment. Excellent sealing performance and low outgassing characteristics ensure the stable operation of the vacuum system.
New energy field
Sealing and conductive components for new energy equipment such as fuel cells, lithium batteries, and photovoltaic devices. High-purity materials and excellent chemical stability ensure the long-term reliable operation of the equipment.
Glass manufacturing
Used for sealing in high-temperature glass manufacturing equipment such as glass furnaces and molding machines. Resistant to high temperatures and corrosive environments, ensuring the sealing and efficiency of the production process.
Medical equipment
Used for sealing and conductive components of high-precision medical instruments such as medical imaging equipment and vacuum treatment equipment. Biocompatibility and high cleanliness ensure medical safety. Frequently Asked Questions Answered

Q1: What is the main material for polishing the graphite rings? A1: We use high-purity graphite material with a carbon content of ≥ 99.5%, ensuring that the product has excellent electrical conductivity, high-temperature resistance and chemical stability.
Q2: Can you provide customized polished graphite ring products? A2: Yes, we fully support customized production. Based on the drawings, samples or specific requirements provided by the customer, we can produce polished graphite rings of different specifications, accuracies and performance requirements.
Q3: What level of surface finish can be achieved for the polished graphite rings? A3: Our precise polishing process can control the surface roughness within the range of Ra 0.4 - 0.8 μm. The surface is smooth without any flaws, ensuring a perfect seal with the mating parts.
Q4: What is the operating temperature range for the polished graphite ring? A4: Our product can function normally within a temperature range of -200°C to +450°C, and it has excellent resistance to thermal shock, making it suitable for various extreme temperature applications.
Q5: How do you ensure the consistency and quality stability of the products? A5: We strictly follow the ISO9001:2015 quality management system. From raw material procurement to the production process and to the final inspection, each step has strict quality control standards to ensure the consistency among product batches.
Q6: What is the delivery period? A6: The delivery period for samples is 4 to 7 weeks. The delivery period for mass production is determined based on the order quantity, usually 8 to 12 weeks. The specific delivery period can be agreed upon during the order confirmation process.
Q7: Do you offer technical support and services? A8: Yes, we provide comprehensive technical support services, including product selection advice, application technical assistance, after-sales service, etc., to ensure that customers can use our products correctly and efficiently.

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