Long Service Life Alumina Ceramic Valve Disc for Pump Seal
Specification and ceramic valve disc
1. Material options: 96% alumina, 99% alumina, silicon carbide (SiO2) and Silicon nitride (Si3N4)
2. Working surface roughness: fine polishing better than Ra0.3, diamond polishing better than Ra0.1
3. Dimension: the max. outer diameter up to 200mm
4. Other parameters: flatness to be 0.002mm, perpendicularity: 0.005mm, Parallelism : 0.002mm
5. Nominal tolerance: size less than 10mm with 0.10mm, size over than 10mm with 1% of dimensions
6. Precision process available: polishing, fine grinding, CNC machining
Prime benefit of the ceramic valve disc
| Mechanical properties |
With diamond-like hardness to be HRA85 |
| Wear-resistance |
Over 276 times than stainless steel |
| Compressive strength |
Over 2000 Mpa |
| Chemical stability |
Resistant most of strong acid and alkali |
| The surfaces contact area ratio |
The value can ensure between 60 ~ 80% |
| Good dimensional |
consistent dimensions every batch via fine grinding |
| Eco-friendly and safe |
All materials meet FDA, LFGB completely |
Description of the ceramic valve disc
High purity alumina ceramic valve disc for the pump seal has been recognized for its safe, outstanding properties and precise operation thereby creating a perfect sealing effect. Furthermore, aluminum oxide ceramic (alumina) is a very cost-effective material, so alumina ceramic sealing discs have been widely used. With comparison with traditional seal disc, it can work smoothly even if after 500,000 cycles or higher due to its unmatched wear resistance and exceptional mechanical strength.
As the ceramic sealing disc is a key component in oil, water, 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 sealing discs, we have been supplying a variety of standard components, also we support various customized needs per your technical drawings, specification, or practical samples.
If you are looking for a quality manufacturer for ceramic sealing discs, please get through with us. We do believe you will find it's a wise choice
The typical application of ceramic valve disc
Ceramic sealing 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.
The gallery of ceramic seals
Remark:
We produce a variety of technical ceramic seals in different materials, also different types of ceramic seals, including ceramic sealing disc, ceramic seal ring, ceramic seat, ceramic ball valve.
Technical Datasheet of the ceramic sealing disc
| Property |
Units |
Materials |
| 99.5%Al2O3 |
99%Al2O3 |
95%Al2O3 |
ZrO2 |
Si3N4 |
| Density |
g/cm3 |
≥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 m1/2 |
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 |
|
Our advantage and strength
1. 10+ Years of manufacturing experience in OEM, ODM and trusted & professional teams
2. Powerful R&D, prototyping & mass production capability to support trial order and high volume production
3. In-house comprehensive manufacturing types of equipment from raw materials to high precision machining
4. Rigorous quality control system and processes, including IQC, IPQC, QA, OQC in working instructions
5. Surpassing pre-sales, sales, and after-sales service, abide all orders every customer 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.
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