The Burgmann M2N single mechanical seal is the industry standard for submersible pumps. Its robust, unbalanced design and conical spring ensure reliable operation in dirty water and sewage. Our high-quality burgmann mechanical seal replacement offers a perfect fit for your submersible pump mechanical seal needs.
Key Features
• Submersible Standard: The M2N is a classic conical spring seal, widely used in submersible pumps for construction, sewage, and drainage.
• Robust & Simple: Its solid, straightforward design resists clogging and can handle the rough conditions of submersible operation.
• Deep Insertion:Burgmann mechanical seals are designed to fit deep into the seal chamber, often running in an oil bath to ensure lubrication.
• Self-Cleaning: The open conical spring allows solids and fibers to be spun out, preventing the spring from becoming blocked in dirty water.
• Positive Drive: The spring grips the shaft to drive the seal face, ensuring reliable rotation even in heavy slurry.
We offer flexible customization to meet your specific requirements:
Material Combinations: Choose from Carbon, SiC, or TC for faces, and NBR, EPDM, or Viton for O-rings to suit your fluid type.
Size Range: Burgmann mechanical seals are available in standard shaft sizes from 6mm to 80mm. We can also produce non-standard sizes for your submersible pump mechanical seal.
OEM/ODM Services: We support custom branding and packaging for your single mechanical seal products.
The versatility of the Burgmann M2N makes it suitable for various industries:
Submersible Pumps: Ideal for sewage, wastewater, and drainage pumps.
Water Supply: Used in clean water and circulation pumps.
Industrial: Suitable for chemical processing and general industrial applications where a reliable single mechanical seal is required.
ISO-Certified Quality: Our manufacturing processes ensure every submersible pump mechanical seal meets international standards.
Factory-Direct Price: We offer competitive pricing without compromising on the quality of our single mechanical seal.
Fast Delivery: Large inventory and efficient logistics guarantee quick turnaround times.
Expert Support: Our technical team provides professional advice to help you select the right submersible pump mechanical seal.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.0MPa | Rotary Ring | Carbon/Sic/TC |
Temperature | -20℃ to 120℃ | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤15m/s | Spring and Metal Part | Stainless Steel |


Product Specifications
| D1 | Size Code | D3 | D7 | L4 | L1 | L11 |
| 10 | 0100 | 22.95 | 24.60 | 8.74 | 43.65 | 25.40 |
| 12 | 0120 | 23.90 | 27.79 | 8.74 | 43.65 | 25.40 |
| 13 | 0130 | 23.90 | 27.79 | 8.74 | 43.65 | 25.40 |
| 14 | 0140 | 26.70 | 30.95 | 10.32 | 43.65 | 25.40 |
| 15 | 0150 | 26.70 | 30.95 | 10.32 | 43.65 | 25.40 |
| 16 | 0160 | 26.70 | 30.95 | 10.32 | 43.65 | 25.40 |
| 18 | 0180 | 31.10 | 34.15 | 10.32 | 43.65 | 25.40 |
| 19 | 0190 | 31.10 | 34.15 | 10.32 | 43.65 | 25.40 |
| 20 | 0200 | 33.40 | 35.70 | 10.32 | 43.65 | 25.40 |
| 22 | 0220 | 33.40 | 37.30 | 10.32 | 43.65 | 25.40 |
| 24 | 0240 | 39.20 | 40.50 | 10.32 | 43.65 | 25.40 |
| 25 | 0250 | 39.20 | 40.50 | 10.32 | 43.65 | 25.40 |
| 28 | 0280 | 46.30 | 47.63 | 11.99 | 60.33 | 33.34 |
| 30 | 0300 | 49.40 | 50.80 | 11.99 | 60.33 | 33.34 |
| 32 | 0320 | 49.40 | 50.80 | 11.99 | 60.33 | 33.34 |
| 33 | 0330 | 52.60 | 53.98 | 11.99 | 60.33 | 33.34 |
| 34 | 0340 | 52.60 | 53.98 | 11.99 | 60.33 | 33.34 |
| 35 | 0350 | 52.60 | 53.98 | 11.99 | 60.33 | 33.34 |
| 38 | 0380 | 55.80 | 57.15 | 11.99 | 60.33 | 33.34 |
| 40 | 0400 | 62.20 | 60.35 | 11.99 | 60.33 | 33.34 |
| 42 | 0420 | 66.00 | 63.50 | 11.99 | 70.64 | 40.48 |
| 43 | 0430 | 66.00 | 63.50 | 11.99 | 70.64 | 40.48 |
| 44 | 0440 | 66.00 | 63.50 | 11.99 | 70.64 | 40.48 |
| 45 | 0450 | 66.00 | 63.50 | 11.99 | 70.64 | 40.48 |
| 48 | 0480 | 66.60 | 66.70 | 11.99 | 70.64 | 40.48 |
| 50 | 0500 | 71.65 | 69.85 | 11.99 | 70.64 | 40.48 |
| 53 | 0530 | 73.30 | 73.05 | 13.50 | 71.00 | 41.00 |
| 55 | 0550 | 78.40 | 76.20 | 13.50 | 71.00 | 41.00 |
| 58 | 0580 | 82.00 | 79.40 | 13.50 | 71.00 | 41.00 |
| 60 | 0600 | 82.00 | 79.40 | 13.50 | 71.00 | 41.00 |
| 63 | 0630 | 84.90 | 82.55 | 13.50 | 71.00 | 41.00 |
| 65 | 0650 | 88.40 | 92.10 | 15.90 | 70.00 | 49.00 |
| 70 | 0700 | 92.60 | 95.25 | 15.90 | 70.00 | 49.00 |
| 73 | 0730 | 94.85 | 98.45 | 15.90 | 73.00 | 49.00 |
| 75 | 0750 | 101.90 | 101.65 | 15.90 | 73.00 | 49.00 |
| 0.375 | 0095 | 22.95 | 24.60 | 8.74 | 43.65 | 25.40 |
| 0.500 | 0127 | 23.90 | 27.79 | 8.74 | 43.65 | 25.40 |
| 0.625 | 0158 | 26.70 | 30.95 | 10.32 | 43.65 | 25.40 |
| 0.750 | 0191 | 31.10 | 34.15 | 10.32 | 43.65 | 25.40 |
| 0.875 | 0222 | 33.40 | 37.30 | 10.32 | 43.65 | 25.40 |
| 1.000 | 0254 | 43.20 | 40.50 | 10.32 | 43.65 | 25.40 |
| 1.125 | 0286 | 46.30 | 47.63 | 11.99 | 60.33 | 33.34 |
| 1.250 | 0317 | 49.40 | 50.80 | 11.99 | 60.33 | 33.34 |
| 1.375 | 0349 | 52.60 | 53.98 | 11.99 | 60.33 | 33.34 |
| 1.500 | 0381 | 55.80 | 57.15 | 11.99 | 60.33 | 33.34 |
| 1.625 | 0412 | 62.20 | 60.35 | 11.99 | 60.33 | 33.34 |
| 1.750 | 0444 | 66.00 | 63.50 | 11.99 | 70.64 | 40.48 |
| 1.875 | 0476 | 66.60 | 66.70 | 11.99 | 70.64 | 40.48 |
| 2.000 | 0508 | 73.00 | 69.85 | 11.99 | 70.64 | 40.48 |
| 2.125 | 0539 | 73.30 | 73.05 | 13.50 | 71.00 | 41.00 |
| 2.250 | 0571 | 78.40 | 76.20 | 13.50 | 71.00 | 41.00 |
| 2.375 | 0603 | 82.00 | 79.40 | 13.50 | 71.00 | 41.00 |
| 2.500 | 0635 | 84.90 | 82.55 | 13.50 | 71.00 | 41.00 |
| 2.625 | 0666 | 88.40 | 92.10 | 15.90 | 70.00 | 49.00 |
| 2.750 | 0698 | 92.60 | 95.25 | 15.90 | 70.00 | 49.00 |
| 2.875 | 0730 | 94.85 | 98.45 | 15.90 | 73.00 | 49.00 |
| 3.000 | 0762 | 101.90 | 101.65 | 15.90 | 73.00 | 49.00 |
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 single mechanical 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
Construction Site Dewatering: Submersible pumps on a rainy construction site were failing. We supplied M2N replacements with TC faces. The rugged design and hard faces handled the mud and grit, keeping the site dry.
Testimonials
We rebuild Tsurumi and other submersibles. The Burgmann M2N is our go-to seal. Simple, tough, and reliable.
—Pump Rental Fleet Manager, Australia
FAQs
Q: Is M2N different from M3N?
A: Yes. While both are conical spring seals, the M2N typically has a different seat design and overall length. M2N is heavier duty and often used in larger shaft sizes for submersibles.
Q: Is this seal a direct replacement for the original Burgmann M2N?
A: Yes, our single mechanical seal is designed as a direct drop-in replacement, ensuring easy installation for your submersible pump mechanical seal.
Q: Can I get a sample before placing a bulk order?
A: Yes, we support sample orders so you can test the quality of our single mechanical seal before committing to a larger purchase.

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