Home Companies Jinghui Industry Limited

99% 99.5% 99.8% Alumina Ceramic Components 0.002mm Smooth Flatness

Active Member

Contact Us

[China]

Address: 8th Building, Futing Industrial Park, Zhu village, Guanlan, Longhua, Shenzhen, China

Contact name:Andy Chen

Jinghui Industry Limited

99% 99.5% 99.8% Alumina Ceramic Components 0.002mm Smooth Flatness

Country/Region	china
City & Province	shenzhen guangdong
Categories	Steel Sheets

Product Details

High Precision Diamond Polished 99% 99.5% 99.8% Alumina Ceramic Seal Face

Specification of the ceramic seal face

Materials options	High purity alumina(Al2O3), Zirconia (ZrO2),silicon carbide (SiO2)
Roughness	Fine polishing better than Ra0.3, diamond polishing better than Ra0.1
Dimension	The max. outer diameter up to 50mm
Other parameters	Flatness to be 0.002mm, perpendicularity: 0.005mm, Parallelism : 0.002mm
Nominal tolerance	Size less than 10mm with 0.10mm, size over than 10mm with 1% of dimensions
Precision process	Polishing, fine grinding, CNC machining

Main features of the ceramic seal face

1. Perfect sliding surface quality: diamond-like surface, the roughness to be Ra0.1

2. Superb chemical stability against hot strong acid and alkali and free of rust forever

3. Excellent wear-resistance and abrasion resistance, over 276 times than stainless steel

4. High-temperature resistance, stand with over 1500℃ free of deformation

5. Exceptional hardness, the physical hardness is up to 1700MPa

6. Great mechanical properties, hardness, compressive and flexural strength

7. Precise and consistent dimensions every batch via fine grinding, CNC machining

8. Eco-friendly and safe, the material meets FDA, LFGB completely

9.Stable breaking strength, and less variance in figure or dimension

Description of the ceramic seal face

Alumina ceramic seal face is characterized by its extremely high strength, wear resistance, low friction, and chemical stability. The outstanding surface quality (diamond polished surface )on both sides makes it sealing performance as desired. Due to alumina's versatile features, alumina ceramic seal ring could work with various severe service environments well, even if under hot strong acid and alkali, high temperature, high pressure, high voltage / current status. It has a super long service cycle in comparison with metal mechanical seals and reduces the time of maintenance

The ceramic seal face plays a key role in water, oil, gas sealing system, we always ensure that we manufacture best-quality products through strict quality control in every process, we introduced KPI into our manufacturing flow chart and keep all batches with consistent dimensions.

With over 15 years of manufacturing experience for ceramic seals, we have been supplying a variety of standard components, also we support various customized needs per your technical drawings, specification or practical samples.

Application of ceramic seals:

Ceramic seal discs are widely used in a variety of water faucet, water tap, sanitary sealing system, regulating system, sealing valves, water /oil/gas pump and so on.

Datasheet of technical ceramic seals

Property	Units	Materials
Property	Units	99.5%Al2O3	99%Al2O3	95%Al2O3	ZrO2	Si3N4
Density	g/cm³	≥3.85	≥3.80	≥3.60	≥6.0	≥3.2
Water absorption	%	0	0	0	0	0
Hardness	HV	1700	1700	1500	1300	1550
Flexural strength	Mpa	≥379	≥338	≥320	≥1200	≥600
Compressive strength	Mpa	≥2240	≥2240	≥2000	≥1990	≥2500
Fracture toughness	Mpa m^1/2	4-5	4-5	3-4	6.5-8	6
Max. service temperature (Non-loading)	℃	1675	1600	1500	1000	1200
CTE (20-800℃)	1×10 ^-6 /℃	6.5~8.0	6.2~8.0	5.0~8.0	8.0~9.5	3.1
Thermal shock	T(℃)	≥250	≥200	≥220	≥300	≤1000
Thermal conductivity(25℃)	W/m.k	30	29	24	3	15~20
Volume resistivity (25℃ )	ohm.cm	＞1 x 10 ¹⁴	＞1 x 10 ¹⁴	＞1 x 10 ¹⁴	＞1 x 10 ¹¹	＞1 x 10 ¹²
Insulation strength	KV/mm	19	18	18	17
Dielectric constant(1Mhz)	(E)	9.7	9.5	9.5	29

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.

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

FAQ

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.