High Precision Wear Resistance 95% 99% Alumina Ceramic Seal Face

• Customization: Available
• Application: Mechanical Seals, Pump Seals, Valve Seals
• Material: Alumina Ceramic
• Model NO.: Customized
• Type: Ceramic Parts
• Purity: 95% / 99%
• Density: Over 3.65g/cm3
• Surface Treatment: Polished Surface to Be Ra0.1
• Feature: Super Long Service Life
• Transport Package: Cartons with EPE Foam
• Specification: Max. OD to be 500mm
• Trademark: JingHui
• Origin: China
• HS Code: 8547100000
• Production Capacity: 5000000 Pieces/Month

Product Description

High Precision Wear Resistance 95% 99% Alumina Ceramic Seal Face


The main features of the ceramic seal face

1. Superb chemical stability against hot strong acid and alkali and free of rust forever
2. Excellent wear-resistance and abrasion resistance, over 276 times than stainless steel
3. Perfect sliding surface quality: diamond-like surface, the roughness to be Ra0.1
4. High-temperature resistance, stand with over 1500ºC 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

The 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 ring 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.


The specification of the ceramic seal face
 

Roughness	Fine polishing better than Ra0.3, diamond polishing better than Ra0.02
Dimension	The max. outer diameter up to 500mm
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

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.

Technical Datasheet of the ceramic seals

Property	Units	Materials
		99.5% Al2O3	99% Al2O3	95% Al2O3	ZrO2	Si3N4
Density	g/cm^3	≥3.90	≥3.85	≥3.65	≥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)	ºC	1675	1600	1500	1000	1200
CTE (20-800ºC)	1×10 ^-6 /ºC	6.5~8.0	6.2~8.0	5.0~8.0	8.0~9.5	3.1
Thermal shock	T(ºC)	≥250	≥200	≥220	≥300	≤1000
Thermal conductivity(25ºC)	W/m.k	30	29	24	3	15~20
Volume resistivity (25ºC )	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

Company Profile

Jinghui Ceramic is a professional manufacturer of ceramic seals and has a complete and scientific quality management system. We strive for excellence in product quality, and high quality is our original intention.

1. Every detail is in place
Our products are well-detailed, have high surface finish and stable performance.

2. Quality control
Using testing equipment and manual screening to ensure that products reach customers without quality problems.

3. Technical support
We can customize as per customer requirements and can provide customers with reference solutions.

4. Fast shipping
The use of mechanized automatic production effectively improves production efficiency while saving labor costs.