Factory Supply Ceramic Insulation Polishing Al2O3 Alumina Ceramic Ring Washer
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Product Highlights
- High Purity Alumina: Available in 95% and 99% Al2O3 content for superior performance.
- High Mechanical Strength: Compressive strength up to 2,500 MPa and flexural strength up to 360 MPa.
- 25+ Years Experience: Over 25 years in manufacturing with competitive pricing and technical support.
- Free Samples Available: Customers can request free samples to test quality before placing orders.
- Strict Quality Control: Complete QC system for chemical composition and physical properties testing.
- 1 Year Warranty: Products come with at least 1 year warranty covering quality issues.
- Flexible MOQ: No minimum order quantity limit for trial orders.
Product Attributes
- Customization
- Available
- Classification
- High-Alumina
- Feature
- Good Mechanical Strength, Good Thermal Insulation Performance, High-Temperature Resistant, Light Weight, Low Thermal Conductivity
- Model NO.
- Ceramic Washer
- Refractoriness (℃)
- 1580< Refractoriness< 1770, 1770< Refractoriness< 2000
- Type
- Industrial Ceramics
- Shape
- Ring
- Material
- Alumina
- Bulk Density
- 3.7-3.85
- Color
- White
- Al2O3
- 95%-99%
- Transport Package
- Sea-Worthy Wooden Pallet
- Specification
- Alumina
- Trademark
- Jucos
- Origin
- China
- Production Capacity
- 1000 Ton/Tons Per Day
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Product Description
Ceramic ring: Wear-Resistant alumina ceramic ring is a product made of special corundum ceramics, in which Al2O3 is the main raw material, rare metal oxides as the flux. It is calcined at a high temperature of 1,700ºC and then combined with high-strength organic/inorganic binders.


| ITEM | UNIT | Alumina|A950 | Alumina|A990 |
| Main Conten | _ | 95%Al203 | 99%Al203 |
| Color | _ | White /Pink | Ivory |
| Density | g/cm3 | 3.7 | 3.85 |
| Vickers Hardness | Gpa | 14 | 17 |
| Flexural Strength | Mpa | 310 | 360 |
| Compressive Strength | Mpa | 2,200 | 2,500 |
| Electrical Resistivity | Ω-cm | >10¹ | >1014 |
| Dielectric Strength | KV/mm | 15 | 17 |
| Dielectric Constant | 1 MHz | 8 | 9 |
| Thermal Conductivity | W/m.K | 25 | 29 |
| Max.Working Temperature | ºC/°F | 1,500/2,730 | 1,650/3,000 |
| Resistance to Thermal Shock | ∠T(ºC) | 210 | 230 |
| Thermal Expansion Coefficient (25-1,000ºC) | 10/K | 7-9 | 7-9 |







Q1 : How can you control your quality?
A1 : For each production processing, JUCOS have complete QC system for the chemical
composition and Physical properties. After production, all the goods will be tested, and
the quality certificate will be shipped along with goods.
Q2: Are you a manufacture or trader?
A2: We are truly a manufacturer, we not only can provide the high quality products with the
best price, but also can offer the best pre-sale service and after-service.
Q3 : Do you provide free samples?
A3 : Of course, free samples are available.
Q4 : What is your lead time?
A4 : It usually needs about 15- 20 days after receiving the PO.
Q5 : Can we visit your company?
A5 : Yes, for sure, you are welcome to visit JUCOS company and our products.
Also, we can talk more about the technique details if you need.
Q6 : What is the warranty of your products?
A6 : Our products have at least 1 year warranty,if any quality problems,
we will take responsibility of the cost of the shipment and the replacement.
Q7: What's the MOQ of trial order?
A7 : No limit, we can offer the best suggestions and solutions according to your condition.
Q8: Why choose us?
A8: We had been in this line for more than 25 years, we can not only provide you high
quality products with competitive price, but also we can supply good technique service
which can help you solve problems.
About the Supplier
Company Profile
Zibo Jucos Co Ltd is a globally operating supplier of high-grade refractory products, systems and services, which are indispensable to industrial high-temperature processes exceeding 1000 º C. We combine global expertise and Chinese raw materials resources, aims to provide high quality refractory materials to serve the world's iron, steel, non-ferrous metals, cement, glass, incinerators, energy, petrochemical and other chemical industries.
We make full use of natural mineral resources rich in different regions and set up two branch factories in China. One is located in Zibo, the main products of alumina base refractory material including clay bricks, high alumina brick, insulation brick etc; The second one is in Yingkou, the main products including magnesia products, such as magnesia brick. Magnesite carbon brick. Magnesite chrome brick etc.
We have a wide range of products to meet the requirements of different industrial customers. The annual production capacity of refractories in all branch factories is up to 60, 000 tons, around 80% of all the products are exported to foreign markets. We are equipped with advanced production equipment and R & D facilities, undergo rigorous testing and testing at each stage of production, understand the exact needs of customers around the world, and design, deliver, manufacture and market high quality refractory products through our team.
With our unique technology experience and operating conditions, we have developed sophisticated and customized refractory products to provide our customers with high-quality products. We are willing to work with all customers at home and abroad for long-term mutually beneficial cooperation for the global industrial users to provide the most cost-effective and high-quality products, welcome friends from all walks of life here guidance.
About Our Factory & Business Background
- Address
- No. 1704 Xinhuan West Road, Zhangdian District, Zibo, Shandong, China
- Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment, Money Gram
- International Commercial Terms(Incoterms)
- FOB, CFR, CIF, DDP, DAP, CIP, CPT, FCA, EXW
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: one month - Nearest Port
- QINGDAO
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Export Year
- 2002-02-01
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- How can you control your quality?
- For each production processing, JUCOS have complete QC system for the chemical composition and Physical properties. After production, all the goods will be tested, and the quality certificate will be shipped along with goods.
- Are you a manufacture or trader?
- We are truly a manufacturer, we not only can provide the high quality products with the best price, but also can offer the best pre-sale service and after-service.
- Do you provide free samples?
- Of course, free samples are available.
- What is your lead time?
- It usually needs about 15- 20 days after receiving the PO.
- Can we visit your company?
- Yes, for sure, you are welcome to visit JUCOS company and our products. Also, we can talk more about the technique details if you need.
- What is the warranty of your products?
- Our products have at least 1 year warranty,if any quality problems, we will take responsibility of the cost of the shipment and the replacement.
- What's the MOQ of trial order?
- No limit, we can offer the best suggestions and solutions according to your condition.
- Why choose us?
- We had been in this line for more than 25 years, we can not only provide you high quality products with competitive price, but also we can supply good technique service which can help you solve problems.
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