• Precision Lapping: The ceramic face is lapped to within 2 light bands of flatness, ensuring a tight seal with the carbon rotary face immediately upon startup.
• Bonded or Booted: Available in both bonded cup and O-ring mounted seat configurations to match the specific Roten housing style (L1k or L4 dimensions).
Key Features
• Standard Roten Replacement: A direct, cost-effective replacement for Roten Type 2, Type 2a, and Type 5 seals found in widely used centrifugal water pumps (e.g., Calpeda, Ebara).
• High-Purity Alumina: Uses 99.5% Alumina Ceramic stationary seats, which offer superior hardness and thermal shock resistance compared to standard 95% commercial ceramics.
• Compact Axial Profile: Engineered to fit the extremely short stuffing boxes typical of mass-produced European water pumps.
Product Specifications
| Size Metric | D1 | D2 | D3 | L1 | L2 | L3 |
| 10 | 19.2 | 15.5 | 19 | 15.5 | 6.6 | 5 |
| 12 | 21.6 | 17.5 | 21 | 15.5 | 5.6 | 5 |
| 14 | 24.6 | 20.5 | 23 | 15.5 | 5.6 | 5 |
| 15 | 24.6 | 20.5 | 24 | 15.5 | 6.6 | 5 |
| 16 | 28 | 22 | 26 | 17.5 | 7.5 | 6.5 |
| 18 | 30 | 24 | 29 | 18.5 | 8 | 6.5 |
| 19 | 31 | 25 | 31 | 20 | 7.5 | 6.5 |
| 20 | 35 | 29.5 | 31 | 20 | 7.5 | 6.5 |
| 22 | 35 | 29.5 | 33 | 21.5 | 7.5 | 6.5 |
| 24 | 38 | 32 | 35 | 23 | 7.5 | 6.5 |
| 25 | 38 | 32 | 36 | 24.5 | 7.5 | 6.5 |
| 26 | 40 | 34 | 37 | 24.5 | 8 | 6.5 |
| 28 | 42 | 36 | 40 | 24.5 | 9 | 6.5 |
| 30 | 45 | 39.2 | 43 | 24.5 | 10.5 | 6.5 |
| 32 | 48 | 42.2 | 46 | 28 | 10.5 | 6.5 |
| 35 | 52 | 46.2 | 49 | 28 | 11 | 6.5 |
| 38 | 55 | 49.2 | 53 | 31 | 10.3 | 6.5 |
| 40 | 58 | 52.2 | 56 | 34 | 10.8 | 6.5 |
| 42 | 62 | 53.3 | 59 | 35 | 12 | 8 |
| 43 | 62 | 54.3 | 59 | 35 | 12 | 8 |
| 45 | 64 | 55.3 | 61 | 36.5 | 11.6 | 8 |
| 48 | 68 | 59.7 | 64 | 42 | 11.6 | 8 |
| 50 | 69 | 60.8 | 66 | 43 | 11.6 | 8.5 |
| 55 | 75.4 | 66.5 | 71 | 47 | 13.3 | 8.5 |
| 58 | 78.4 | 69.5 | 76 | 50 | 13.3 | 8.5 |
| 60 | 80.4 | 71.5 | 78 | 51 | 13.3 | 8.5 |
| 65 | 85.4 | 76.5 | 84 | 52 | 13 | 8.5 |
| 68 | 91.5 | 82.7 | 88 | 53 | 13.7 | 9.5 |
| 70 | 92 | 83 | 90 | 54 | 13 | 9.5 |
| 75 | 99 | 92.2 | 98 | 55 | 14 | 9.5 |
| 80 | 104 | 95.2 | 100 | 58 | 15 | 10 |
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
Domestic Booster System: A residential building water booster system was leaking. We supplied Alumina/Carbon replacements for the Roten Type 2 seals. The high-purity ceramic resisted the micro-abrasives in the city water, stopping the leaks instantly.
Testimonials
The ceramic quality on these Roten replacements is excellent. They don't pit like the cheaper ones we used to buy.
—Pump Repair Technician, Spain
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Is Alumina Ceramic better than Steatite?
A: Yes, significantly. 99.5% Alumina is harder, more chemically resistant, and dissipates heat better than lower-grade Steatite ceramics, reducing the risk of heat cracking during dry starts.
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
