• Shaft Protection: Unlike standard pusher seals, the sealing O-ring is static against the shaft, eliminating the need for a hardened shaft sleeve.
• Self-Aligning: The flexible rubber body allows the seal face to self-align against the stationary seat, compensating for misalignment.
Key Features
• Non-Pusher Concept: Although it uses an O-ring, the design includes a protective sleeve or bellow-like elastomer section that grips the shaft, preventing the dynamic O-ring from wearing a groove in the shaft (fretting).
• Metric Precision: Exact fit for 40mm and 45mm metric pump shafts (DIN standard).
• Flexible Drive: The elastomer bellows section provides torque transmission and flexibility to handle shaft runout.
Technical Specs | Materials | ||
Pumps | Water pumps, Circulation Pumps, etc. | Stationary Ring | Carbon/Sic/TC |
Temperature | -20℃ to 180℃ | Rotary Ring | Ceramic/Sic/TC |
Pressure | ≤0.8MPa | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤10m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| Metric Size D1 | Size Code | D3 | D7 | L1 | L4 |
| 10 | 0100 | 20.00 | 18.10 | 15.00 | 5.50 |
| 11 | 0110 | 22.00 | 20.60 | 18.00 | 5.50 |
| 12 | 0120 | 22.00 | 20.60 | 18.00 | 5.50 |
| 13 | 0130 | 25.00 | 23.10 | 22.00 | 6.00 |
| 14 | 0140 | 25.00 | 23.10 | 22.00 | 6.00 |
| 15 | 0150 | 29.00 | 26.90 | 22.00 | 7.00 |
| 16 | 0160 | 29.00 | 26.90 | 23.00 | 7.00 |
| 17 | 0170 | 29.00 | 26.90 | 23.00 | 7.00 |
| 18 | 0180 | 33.00 | 30.90 | 24.00 | 8.00 |
| 19 | 0190 | 33.00 | 30.90 | 25.00 | 8.00 |
| 20 | 0200 | 33.00 | 30.90 | 25.00 | 8.00 |
| 21 | 0210 | 38.00 | 35.40 | 25.00 | 8.00 |
| 22 | 0220 | 38.00 | 35.40 | 25.00 | 8.00 |
| 23 | 0230 | 38.00 | 35.40 | 27.00 | 8.00 |
| 24 | 0240 | 38.00 | 35.40 | 27.00 | 8.00 |
| 25 | 0250 | 40.00 | 38.20 | 27.00 | 8.50 |
| 28 | 0280 | 46.00 | 43.30 | 29.00 | 9.00 |
| 29 | 0290 | 46.00 | 43.30 | 30.00 | 9.00 |
| 30 | 0300 | 46.00 | 43.30 | 30.00 | 9.00 |
| 32 | 0320 | 46.00 | 43.30 | 30.00 | 9.00 |
| 33 | 0330 | 48.00 | 53.50 | 39.00 | 11.50 |
| 35 | 0350 | 50.00 | 53.50 | 39.00 | 11.50 |
| 38 | 0380 | 58.00 | 60.50 | 39.00 | 11.50 |
| 40 | 0400 | 58.00 | 60.50 | 39.00 | 11.50 |
| 10 | 0100 | 20.00 | 21.00 | 15.00 | 7.00 |
| 12 | 0120 | 22.00 | 23.00 | 18.00 | 7.00 |
| 14 | 0140 | 25.00 | 25.00 | 22.00 | 7.00 |
| 16 | 0160 | 29.00 | 27.00 | 23.00 | 7.00 |
| 18 | 0180 | 33.00 | 33.00 | 24.00 | 10.00 |
| 20 | 0200 | 33.00 | 35.00 | 25.00 | 10.00 |
| 22 | 0220 | 38.00 | 37.00 | 25.00 | 10.00 |
| 24 | 0240 | 38.00 | 39.00 | 27.00 | 10.00 |
| 25 | 0250 | 40.00 | 40.00 | 27.00 | 10.00 |
| 28 | 0280 | 46.00 | 43.00 | 29.00 | 10.00 |
| 30 | 0300 | 46.00 | 45.00 | 30.00 | 10.00 |
| 32 | 0320 | 46.00 | 48.00 | 30.00 | 10.00 |
| 33 | 0330 | 48.00 | 48.00 | 39.00 | 10.00 |
| 35 | 0350 | 50.00 | 50.00 | 39.00 | 10.00 |
| 38 | 0380 | 56.00 | 56.00 | 42.00 | 13.00 |
| 40 | 0400 | 58.00 | 58.00 | 42.00 | 13.00 |
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
Water Treatment Plant: A 40mm shaft submersible mixer was suffering from shaft wear due to standard O-ring seals. We switched to this non-pusher design. The elastomer grip protected the shaft, and the seal has lasted 2 years without damaging the equipment.
Testimonials
Great alternative to MG1 style seals when you want to protect the shaft. Fits our 45mm wastewater pumps perfectly.
—Maintenance Supervisor, Spain
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Is this compatible with Burgmann MG1?
A: Yes, this is functionally equivalent to the MG1 style elastomer bellow seal. It fits the same dimensions and offers the same non-pusher shaft protection benefits.
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
