China Ceramic Alumina Tube manufacturer

Injection Molding Zirconia Ceramic Ring Aluminum Oxide Fluid Controlling Applied

Product Details:
Place of Origin: China
Brand Name: Jinghui Ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.ZRCP.001
Payment & Shipping Terms:
Minimum Order Quantity: 10 piece per order
Price: Negotiable
Packaging Details: Bags with export carton
Delivery Time: 5~6 weeks
Payment Terms: T/T, Western Union, MoneyGram, Paypal, , L/C
Supply Ability: 100000 sets per month

Detail Information

Product Name: Zirconia Ceramic Seal Ring Material: Zirconium Oxide Ceramic
Type: Advanced Ceramic Parts Color: Pure White
Size: Up To 50 Mm X 300 Mm Feature: High Wear Resistance, High Accuracy
Tolerance: As Design Drawing Or OEM Shape: Customized Designs
Surface Treatment: Well-polished Application: Industrial Ceramic
High Light:

zirconia toughened alumina


zirconium oxide ceramic

Product Description

Ceramic Injection Molding ZrO2 Zirconia Ceramic Seal Ring for Fluid Controlling

Specification of ceramic seal ring: 

1. Material options: aluminum oxide ceramic ( ZrO2), High purity alumina (Al2O3) and Silicon carbide (SiC)
2. Forming method: Dry pressed, Ceramic injection molding and ISO pressing
3. Specification: Max. outer diameter can be 150mm,  Max. side-length to be 800mm, Max. length can be 1000mm
4. Tolerance: The tolerance of outer diameter can be 0.005mm,  inner diameter can be 0.01mm,  length can be 0.01mm
5. Other key parameters: flatness to be 0.005mm, roundness to be 0.01mm, concentricity to be 0.01mm 
6. Surface finish: the working surface to be diamond polished up to Ra0.1, or better

Prime features of zirconia ceramic seal ring:

1. Extraordinary wear resistance and excellent corrosion resistance in various harsh conditions

2. Ideal sealing performance because of superb low friction coefficient and similar thermal expansion coefficient as stainless steel.

3. Low wear loss can prevent the material of zirconia from the pollution of the fluid controlling system

4. Extremely long service life with minimum maintenance cost than various metal seal parts

5. High hardness, high flexural strength, high fracture toughness, high mechanical strength

6. Low thermal conductivity:  less than 3 W/m.k at ambient temperature, so it's an ideal thermal material


Description of zirconia ceramic seal ring:

Zirconia ceramic seal ring is a key part of the various pumps, valves in household appliances, electrical appliances, and industrial applications. It plays a decisive role in liquid, gas, oil sealing and controlling performance. 

With zirconium oxide ceramic outstanding properties, such as wear-resistance, chemical resistance, low thermal conductivity, high thermal expansion coefficient similar as stainless steel, very low friction coefficient, zirconia ceramic seal rings have been creating a very positive impact on aging features, service life-span, productivity, dependability in industrial equipment, mechanical engineering, like the food and beverage industry, medical equipment, electrical devices and so on.

Besides the ceramic seal ring, we also produce a variety of customized ceramic valve seat, ceramic ball valve, ceramic valve disc, ceramic piston and plunger for fluid, gas, oil-controlling / regulating system.


Gallery of zirconia ceramic seals

We produce various zirconia ceramic sealing parts, including ceramic valve seat, ceramic ball valve, ceramic seal cylinder and so on.
Injection Molding  Zirconia Ceramic Ring Aluminum Oxide Fluid Controlling Applied 0  Injection Molding  Zirconia Ceramic Ring Aluminum Oxide Fluid Controlling Applied 1  Injection Molding  Zirconia Ceramic Ring Aluminum Oxide Fluid Controlling Applied 2

Datasheet of Technical ceramics

Property Units Material
99.5% alumina 99%alumina 95% alumina ZrO2



Density g/cm3 ≥3.85 ≥3.80 ≥3.60 ≥5.95 ≥5.72
Water absorption % 0 0 0 0 0
Hardness HV 1700 1700 1500 1300 900
Flexural strength Mpa ≥379 ≥338 ≥320 ≥1200 ≥1200
Compressive strength Mpa ≥2240 ≥2240 ≥2000 ≥1990 1750
Fracture toughness Mpa m1/2 4-5 4-5 3-4 6.5-8 11
Max. service
1675 1600 1450 1000  
CTE 1×10 -6 /℃ 6.5~8.0 6.2~8.0 5.0~8.0 8.0~9.5 10.2
Thermal shock T(℃) ≥250 ≥200 ≥220 ≥300 350
Thermal conductivity(25℃) W/m.k 30 29 24 3 3
Volume resistivity          
25℃ >1 x 10 14 >1 x 10 14 >1 x 10 14 >1 x 10 11 >1 x 10 11
300℃ 1 x 10 12 8 x 10 11 10 12 -10 13 1 x 10 10 1 x 10 10
500℃ 5 x 10 10 2 x 10 9 1 x 10 9 1 x 10 6 1 x 10 6
Insulation strength KV/mm 19 18 18 17 20
Dielectric constant(1Mhz) (E) 9.7 9.5 9.5 29 28


Manufacturing flow chart of the ceramic seal ring

We have in-housing comprehensive manufacturing types of equipment, including forming, sintering, CNC machining,

precision grinding, laser cutting and so on, it helps us to control the quality very well, also it greatly benefits cost control.

Injection Molding  Zirconia Ceramic Ring Aluminum Oxide Fluid Controlling Applied 3



Packaging proposal and transportation solutions

1. We will keep the ceramic parts inside the inner package to be fixed without moving, then it will prevent them from collision each other,

to avoid any cause any chippings during transportation.

2. In addition, the inside of the outer carton will be filled with sufficient protective kinds of stuff.


Injection Molding  Zirconia Ceramic Ring Aluminum Oxide Fluid Controlling Applied 4


Why choose us?

★ 10+ Years of manufacturing experience in OEM, ODM                        ★ Powerful R&D, mass production capability
★ In-house comprehensive manufacturing types of equipment               ★ Rigorous quality control system and processes
★ Surpassing pre-sales and after-sales service                                       ★ Abide all orders as the first priority


FAQs(Frequently asked questions)

Q1. Are you a factory or trading company?
A: We are a manufacturer. You are welcome to visit our factory.
Q2: Do you send a sample to check?
A: Sure, the sample is free and freight collect.
Q3: When will you ship it?
A: If the products are in storage, we'll ship within 48 hours
Q4: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed with your inquiry as a priority.
Q5: Is it available to provide customized products?
A: We always support custom-made demand as per different materials, dimensions, and designs.
Q6: How to ensure quality?
A: The dimension out of any batch will be carried out sampling inspection per international AQL standard. A 100% cosmetic inspection will be done.
Q7: What other products are you dealing with?
A: We focus on a variety of ceramic tubes, ceramic substrates, ceramic sheets, textile ceramics besides metalized ceramics.

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