• Thermal Shock Resistance: Carbon Graphite handles rapid temperature changes (e.g., cold water to hot CIP) better than ceramic, preventing face cracking.
• Hygienic Design: The seal geometry is open and smooth, allowing for effective cleaning during CIP (Clean-In-Place) cycles without disassembly.
Key Features
• Alfa Laval Standard: A direct replacement for the standard single seals used in Alfa Laval centrifugal pumps (e.g., LKH, SolidC) handling water, beer, or non-abrasive fluids.
• FDA Carbon Grade: Uses high-purity, food-grade Carbon Graphite faces that meet FDA 21 CFR 177 standards for direct contact with food products.
• Self-Lubricating: The Carbon face provides excellent self-lubrication, protecting the seal during momentary dry runs often encountered in tank emptying cycles.
Product Specifications
Graphite chemical property | ||||||||
Category | Model | Density (g/cm) | Fractural Strength (MPa) | Compressive Strength (MPa) | Shaw Hardness (HS) | Porosit y(%) | Temperature (℃) | |
Carbon-graphite | Impregnated Epoxy Resin (H) | M106H | 1.75 | 65 | 200 | 85 | <1 | 250 |
M120H | 1.7 | 60 | 180 | 80 | <1 | 250 | ||
Impregnated Furan Resin (K) | M106K | 1.75 | 67 | 200 | 90 | <1 | 250 | |
M120K | 1.7 | 62 | 180 | 85 | <1 | 250 | ||
Impregnated Phenol Aldehyde Resin (F) | M106F | 1.75 | 60 | 200 | 85 | <1 | 250 | |
M120F | 1.7 | 55 | 180 | 80 | <1 | 250 | ||
Antimony Carbon (D) | M106D | 2.3 | 65 | 220 | 90 | <1.5 | 400 | |
M120D | 2.3 | 60 | 220 | 90 | <1.5 | 400 | ||
M254D | 2.3 | 55 | 210 | 65 | <1.5 | 450 | ||
Operating Limits | Units | M106D |
Imperegnated material | Slibium-allay | |
Shaw Hardness | HS | ≥90 |
Indicated Parosity | % | ≤2.0 |
Volume Density | g/m³ | ≥2.20 |
Compressive Strength | Mpa | ≥240 |
Flexural Strength | Mpa | ≥70 |
Coefficient Of Heat Expansion | 10-6·1/℃ | 7.2 |
Using Temperature | ℃ | ≤400 |
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
Brewery Transfer: A brewery was using expensive SiC seals on water and wort pumps. We switched them to these Carbon/Graphite seals. The carbon handled the clean fluids perfectly, reducing seal costs by 40% while maintaining hygiene standards.
Testimonials
A cost-effective alternative for our LKH water pumps. The carbon quality is excellent and we've had zero contamination issues.
—Maintenance Supervisor, Brewery
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Is this seal suitable for abrasive fluids?
A: No, Carbon is relatively soft. If you are pumping fluids with yeast, grains, or sugar crystals, you should upgrade to Silicon Carbide (SiC) faces to prevent premature wear. Carbon is best for clean liquids.
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
