• Direct Torque Transmission: Torque is transmitted directly through the bellow tail or drive collar, eliminating the need for drive pins that can wear out.
• Balanced by Design: The effective diameter of the bellow changes with pressure, providing a naturally balanced face load for varying pressures.
Key Features
• Economic High-Temp Solution: A cost-effective component seal (non-cartridge) that brings metal bellows technology to standard industrial pumps.
• Self-Cleaning: The rotating bellow action actively flings dirty fluid away from the seal face, making it ideal for media with suspended solids.
• Compact Design: Shorter axial length allows it to fit into stuffing boxes where cartridge seals might be too long.
Technical Specs | Materials | ||
Mediums | Oil, light hydrocarbon, aromatic hydrocarbon, organic solvents, weak acids, alkali, Ammonia, etc. | Stationary Ring | Sic/TC |
Temperature | -75℃ to 400℃ | Rotary Ring | Carbon/Sic/TC |
Pressure | ≤2.0MPa (Single), ≤6.0MPa (Double) | Secondary Seal | Graphite |
Speed | ≤23m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| Size/inch D1 | Size Code | D3 | L1 |
| 0.750 | 0191 | 41.28 | 58.72 |
| 0.875 | 0222 | 44.45 | 59.51 |
| 1.000 | 0254 | 47.63 | 59.51 |
| 1.125 | 0286 | 50.80 | 60.33 |
| 1.250 | 0317 | 53.98 | 60.33 |
| 1.375 | 0349 | 57.15 | 62.69 |
| 1.500 | 0381 | 60.33 | 63.50 |
| 1.625 | 0412 | 63.50 | 63.50 |
| 1.750 | 0444 | 66.68 | 64.29 |
| 1.875 | 0476 | 69.85 | 64.29 |
| 2.000 | 0508 | 73.03 | 65.07 |
| 2.125 | 0539 | 76.20 | 65.07 |
| 2.250 | 0571 | 82.55 | 69.85 |
| 2.375 | 0603 | 85.73 | 70.64 |
| 2.500 | 0635 | 88.90 | 70.64 |
| 2.625 | 0666 | 93.65 | 73.03 |
| 2.750 | 0698 | 96.82 | 76.20 |
| 2.875 | 0730 | 101.60 | 76.20 |
| 3.000 | 0762 | 104.78 | 76.20 |
| 3.125 | 0794 | 107.95 | 76.20 |
| 3.250 | 0826 | 111.13 | 76.20 |
| 3.375 | 0857 | 114.30 | 76.20 |
| 3.500 | 0889 | 117.48 | 76.20 |
| 3.625 | 0921 | 120.65 | 76.20 |
| 3.750 | 0953 | 123.83 | 76.20 |
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
Hot Water Circulation: Replaced failing O-ring pusher seals in a district heating system with these Rotating Metal Bellows components. The elimination of the O-ring hang-up solved the chronic leakage issues immediately.
Testimonials
We retrofit these into our customers' thermal oil pumps during overhaul. They are easy to install and very reliable.
—Pump Repair Shop, Australia
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Is this harder to install than a cartridge seal?
A: Yes, as a component seal, you must manually set the working length on the shaft. However, for skilled technicians, it offers a much lower material cost. We provide detailed setting dimension drawings.
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
