• Debris Exclusion: Includes a dust lip or scraper to prevent powder product from entering the seal face area.
• Low Friction Topography: The seal faces feature a laser-textured surface to reduce friction and heat generation during dry running.
Key Features
• Dry-Running Specialist: Designed for vertical mixers and agitators where liquid lubrication is not possible or desired.
• Self-Lubricating SiC: Uses a specialized Graphite-Loaded Silicon Carbide grade that provides the hardness of SiC with the self-lubricating properties of Carbon, allowing dry operation.
• Chemical & Dust Resistance: The PTFE wedge secondary seal resists aggressive vapors and prevents powder or dust from packing into the seal mechanism.
Product Specifications
Sic Physical Property | |||
Technical Parameter | Unit | Sic | Ssic |
Hardness | HS | 110 | 115 |
Porosity Rate | % | <0.3 | <0.2 |
Density | g/cm³ | 3.00-3.05 | >3.1 |
Compressive Strength | MPa | ≥2200 | ≥2500 |
Fractural Strength | MPa | ≥350 | ≥380 |
Coefficient Of Heat Expansion | 10⁻⁶/℃ | 4 | 4.2 |
Content of Sic | % | ≥90 | ≥98 |
Content of Free Silicone | % | ≤10 | ≤1 |
Elastic Modulus | GPa | ≥400 | ≥410 |
Temperature | ℃ | 1300 | 1400 |
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
Pharma Powder Blender: A pharmaceutical powder blender needed a seal that wouldn't contaminate the product with barrier fluid. We installed this Dry SiC PTFE Wedge Seal. It maintained a vacuum seal for the drying cycle without any liquid lubrication.
Testimonials
Clean, dry, and reliable. Perfect for our food powder mixers where oil leaks are not an option.
—Production Manager, Food Ingredients
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Can standard SiC run dry?
A: No, standard SiC will overheat and crack instantly without liquid. This seal uses a specialized composite material designed specifically for dry friction.
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
