Looking for a Burgmann H75N mechanical seal or a direct EagleBurgmann H75N replacement? Our MIAOYU H75N series is a 100% dimensionally interchangeable equivalent to the original EagleBurgmann H75N balanced mechanical seal for tandem pump, high-pressure multistage centrifugal pumps and process pumps. As a Burgmann H75N replacement manufacturer in China, we offer custom mechanical seal factory direct price, OEM/ODM support and full material options—delivering OEM-grade performance without the OEM markup. Suitable for oil, water, weak corrosive media up to 25 bar.
Key Features
• Heavy Duty: The Burgmann H75N mechanical seal is a robust, balanced mechanical seal engineered for high-pressure (up to 25 bar) and high-viscosity applications such as oil, resin, and chemical transfer. This EagleBurgmann H75N replacement delivers the same performance as the original at a factory direct price.
• Wave Spring or Multi-Spring: Features a wave spring or protected multi-spring design that ensures uniform face loading while preventing clogging in sticky or crystallizing media. Fully interchangeable with original Burgmann H75N spring assembly.
• Tandem Ready: Specifically designed for tandem pump seal configurations, providing a safety buffer zone for hazardous, toxic, or crystallizing fluids. As a Burgmann H75N replacement manufacturer in China, we supply both single and tandem versions with custom barrier fluid ports.
• Balanced Design: The balanced stepped face geometry allows the seal to handle system pressures up to 25 bar without face separation or excessive heat buildup. Ideal as a H75N pump mechanical seal for boiler feed pumps, multistage centrifugal pumps, and chemical process pumps.
• Torque Drive: Equipped with robust drive pins and lugs to transmit high torque reliably—essential when pumping heavy oils, resins, or slurries. Available with custom material combinations (SiC/SiC, SiC/Carbon, TC/TC) and O-ring elastomers (Viton, EPDM, Kalrez). Get custom mechanical seal factory direct price by contacting our engineering team.
We understand that every application is unique. As a specialized Burgmann mechanical seal manufacturer, we offer extensive customization for the Burgmann H75N seal to meet your exact specifications:
Material Combinations: Choose from Carbon, SiC, or TC for the rotary and stationary faces. Secondary seals are available in NBR, EPDM, Viton (FKM), PTFE, or Kalrez to suit aggressive media.
Size Range: Tandem pump seals are Available in standard shaft diameters from 14mm to 100mm. We can also produce non-standard sizes upon request.
Spring & Metal Parts: Options include SS304, SS316, and Hastelloy C for springs and hardware, ensuring compatibility with corrosive environments.
OEM/ODM Services: We support custom branding and packaging to help you build your own product line.
The versatility of the Burgmann H75N Mechanical Seal makes it suitable for a wide array of industries and equipment:
Tandem Pumps: Specifically designed for the high-pressure stages of multi-stage centrifugal pumps.
Chemical Processing: Ideal for handling oil, water, and weakly corrosive mediums in refineries and chemical plants.
Power Generation: Used in boiler feed pumps and other high-pressure circulation systems.
General Industry: Suitable for process pumps in pulp & paper, mining, and food & beverage sectors.
Why choose us for your Burgmann H75N Mechanical Seal Replacement needs?
Precision Manufacturing: Our workshop utilizes advanced CNC machining centers and strict quality control systems (ISO 9001 certified) to ensure every seal meets DIN and ISO standards.
Factory-Direct Value: By eliminating intermediaries, we provide high-quality seals at competitive factory prices, offering you significant cost savings without compromising on performance.
Fast Delivery: With a large inventory of standard sizes and efficient production lines, we guarantee quick turnaround times for both standard and custom orders.
Expert Support: Our technical team has over 20 years of experience in tandem pump seal. We provide free technical consultation to help you select the right seal for your specific application.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.4MPa | 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 (inch) | Size Code | D1 (mm) | Size Code | D3 | D7 | L1 | L4 |
| 0.500 | 0127 | 12 | 0120 | 30.14 | 25.40 | 20.64 | 7.93 |
| 14 | 0140 | 33.32 | 31.75 | 22.23 | 10.30 | ||
| 0.625 | 0158 | 16 | 0160 | 33.32 | 31.75 | 22.23 | 10.30 |
| 0.750 | 0191 | 18 | 0180 | 36.50 | 34.93 | 22.23 | 10.30 |
| 20 | 0200 | 39.67 | 38.10 | 23.80 | 10.30 | ||
| 0.875 | 0222 | 22 | 0220 | 39.67 | 38.10 | 23.80 | 10.30 |
| 24 | 0240 | 45.50 | 41.28 | 25.40 | 11.10 | ||
| 1.000 | 0254 | 25 | 0250 | 45.50 | 41.28 | 25.40 | 11.10 |
| 1.125 | 0286 | 28 | 0280 | 48.50 | 44.44 | 26.97 | 11.10 |
| 30 | 0300 | 52.37 | 47.63 | 26.97 | 11.10 | ||
| 1.250 | 0317 | 32 | 0320 | 52.37 | 47.63 | 26.97 | 11.10 |
| 33 | 0330 | 56.00 | 50.80 | 28.58 | 11.10 | ||
| 1.375 | 0349 | 35 | 0350 | 56.00 | 50.80 | 28.58 | 11.10 |
| 1.500 | 0381 | 38 | 0380 | 59.20 | 53.98 | 28.58 | 11.10 |
| 1.625 | 0412 | 40 | 0400 | 67.00 | 60.33 | 34.93 | 12.70 |
| 43 | 0430 | 69.85 | 63.50 | 34.93 | 12.70 | ||
| 1.750 | 0444 | 45 | 0450 | 69.85 | 63.50 | 34.93 | 12.70 |
| 1.875 | 0476 | 48 | 0480 | 73.03 | 66.68 | 38.10 | 12.70 |
| 2.000 | 0508 | 50 | 0500 | 76.20 | 69.85 | 38.10 | 12.70 |
| 2.125 | 0539 | 53 | 0530 | 82.55 | 76.20 | 42.85 | 14.28 |
| 2.250 | 0571 | 55 | 0550 | 85.73 | 79.38 | 42.85 | 14.28 |
| 2.375 | 0603 | 60 | 0600 | 88.90 | 82.55 | 46.02 | 14.28 |
| 2.500 | 0635 | 63 | 0630 | 92.08 | 85.73 | 46.02 | 14.28 |
| 2.625 | 0666 | 65 | 0650 | 98.43 | 85.73 | 49.20 | 15.90 |
| 2.750 | 0698 | 70 | 0700 | 101.60 | 88.90 | 49.20 | 15.90 |
| 2.875 | 0730 | 73 | 0730 | 104.78 | 95.25 | 52.37 | 15.90 |
| 3.000 | 0762 | 75 | 0750 | 107.95 | 98.43 | 52.37 | 15.90 |
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 Burgmann h75n 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
Bitumen Transfer: A tandem pump moving hot bitumen used Burgmann H75N seals. Leakage was frequent. We replaced them with our H75N equivalent featuring Kalrez O-rings. The high-temp elastomers held up, extending MTBF from 3 months to 18 months.
Testimonials
A serious seal for serious pumps. The Burgmann H75N replacement handles our high-pressure resin lines without issue.
—Maintenance Lead, Chemical Plant
FAQs
Q: Is this a balanced seal?
A: Yes, the Burgmann H75N is hydraulically balanced. This means it can handle higher pressures and generates less heat than an unbalanced seal like the Burgmann M3 or Burgmann MG1.
Q: Is your H75N seal a direct replacement for EagleBurgmann H75N?
A: Yes, 100% dimensionally interchangeable
Q: Do you supply Burgmann H75N replacement as a manufacturer in China with factory direct price?
A: Yes, MIAOYU is a Burgmann H75N replacement manufacturer in China, we offer custom mechanical seal factory direct price, OEM branding and fast shipment.
Q: Is your H75N seal a direct replacement for EagleBurgmann H75N?
A: Yes, 100% dimensionally interchangeable

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