• Bonded Face Technology: The ceramic ring is securely bonded to the stainless steel holder to prevent rotation and leakage under torque load.
• Cost-Efficiency: Provides a significant cost saving over Tungsten Carbide seals for non-abrasive applications or secondary sealing duties.
Key Features
• Legacy Replacement: Ideal for older generation Flygt 2000 series pumps (e.g., 2066, 2102) where Alumina Ceramic was the original standard specification.
• Corrosion Proof: Ceramic is immune to the corrosion that attacks tungsten carbide binders in certain acidic wastewater environments.
• Upper Seal Application: Excellent choice for the "Upper Seal" position (motor side) in modern Flygt pumps, running in a clean oil bath.
Product Specifications
Al₂O₃ Ceramic Physical Property | ||||
Technical Parameter | Unit | 95% | 99% | 99.5% |
Content Of Al₂O₃ | % | 95 | 99 | 99.5 |
Density | g/cm³ | 3.7 | 3.88 | 3.9 |
Hardness | HRA | 85 | 88 | 90 |
Porosity Rate | % | <0.4 | <0.2 | <0.15 |
Fractural Strength | MPa | 250 | 310 | 350 |
Coefficient Of Heat Expansion | 10⁻⁶/K | 5.5 | 5.3 | 5.2 |
Thermal Conductivity | W/M.K | 27.8 | 26.7 | 26 |
TC physical property | |||||||
Technical Parameter | Unit | YWN6 | YWN8 | YG6 | YG8 | DYNT60 | |
Composition | WC | % | 94 | 92 | 94 | 92 | |
Ni | % | 6 | 8 | ||||
Co | % | 6 | 8 | ||||
Density | g/cm³ | 14.5-14.9 | 14.4-14.8 | 14.6-15 | 14.5-14.9 | 6.5-6.8 | |
Hardness | HRA | 88.5 | 88 | 89.5 | 89 | 90 | |
Fractural Strength | MPa | 1490 | 1470 | 1421 | 1470 | 1480 | |
Heat Expansion Co-efficient | 10⁻⁶/K | 5.2 | 5.3 | 5 | 5.1 | 7.5 | |
Workshop
This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished product delivery. It ensures part machining accuracy and production efficiency, meeting various high-specification manufacturing requirements.
Product Research, Development and Testing
Our Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.
Industry Solutions
Case Study
Municipal Sump: Replaced the upper seals on a fleet of Flygt 3127 pumps. Using Alumina/Carbon for the upper seal (oil side) saved 40% on the overhaul cost compared to using TC/TC, with no loss in reliability for that specific position.
Testimonials
For the upper seal in the oil chamber, there's no need for expensive carbide. These ceramic seals work perfectly and save us budget.
—Pump Workshop Manager, Australia
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Can I use this as the lower seal?
A: Only if the pumped fluid is relatively clean (e.g., stormwater). For raw sewage with grit and sand, we strongly recommend Tungsten Carbide for the lower seal. Ceramic is brittle and can chip from rock impacts.
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
E-mail: gechacha@aliyun.com
Mobile: +86-18758835650
WhatsApp: +86-18758835650
Add: No8-2, Jinsha road Yuelin Street, Fenghua District, Ningbo, Zhejiang
