High Sealing Performance Alumina Ceramic seal For Shut-Off Valve
The main characteristics of the alumina ceramic seals
1. Excellent wear-resistance, over 276 times than stainless steel
2. Exceptional hardness, the hardness is up to 1700MPa
3. Chemical stability, resistant most of strong acid and alkali\
4. Great mechanical properties, hardness, compressive and flexural strength
5. Perfect surface contact area ratio: the value can ensure between 60 ~ 80%
6. Precise and consistent dimensions every batch via fine grinding
7. Eco-friendly and safe, the material meets FDA, LFGB completely
The specification and ceramic seals
| Material options |
96% alumina, 99% alumina, silicon carbide (SiO2) and Silicon nitride (Si3N4) |
| Working surface roughness |
fine polishing better than Ra0.3, diamond polishing better than Ra0.1 |
| 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 available |
polishing, fine grinding, CNC machining |
The description of the ceramic seal discs
Alumina (al2o3) ceramic seal disc is an innovative liquid control system found in tap, faucet, sanitary controlling system, regulator, diverter, water pump. Each time you use the devices, two discs ( rotor and stator) control water, beverages, oil flow by gliding back and forth in an airtight seal that prevents leaking and ensures a super smooth operation.
The sliding surface of the ceramic sealing disk is extremely smooth and almost as hard as diamonds. These durable valves are unaffected by temperature extremes, sand, rust, and severe water conditions.
As ceramic seal disk is a key component 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 seal discs, we have been supplying a variety of standard components, also we support various customized needs per your technical drawings, specification or practical samples.
The typical application of ceramic seal disc
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.
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.
){kind=link}
){kind=link}