Key Features

• Universal Wave Spring Seal: The M7N is the modern industry standard for chemical and water pumps, featuring a wave spring and robust drive lugs.

• Super-Sinus Spring: Utilizes a specialized "Super-Sinus" wave spring that offers constant spring force over a wide working range and resists clogging.

• ISO/DIN Standard: Designed to fit standard DIN 24960 (EN 12756) seal chambers found in KSB, Sulzer, and Andritz pumps.

• Loose Face Fit: The seal face is loosely inserted into the driver, allowing it to self-align and reducing the risk of heat distortion transfer from the shaft.

• High-Pressure Capability: Capable of handling pressures up to 25 bar (or higher in special designs) due to its balanced nature and strong drive mechanism.

Applications

The Burgmann M7N excels in a wide range of industries and fluids:

• Vertical Turbine Pumps – Primary application for vertical turbine pump mechanical seal replacements in water supply, irrigation, and booster systems.

• Sugar & Food Processing – Handles high‑viscosity sugar juice, syrups, and dairy products.

• Wastewater & Sludge – Reliable sealing in raw sludge, sewage, and abrasive slurry pumps.

• Chemical & Pulp/Paper – Resists corrosive and fibrous media in process pumps.

• Mining & Power Plants – Durable performance in lube‑oil, cooling‑water, and other utility pumps.

Company Advantages

• Expertise in Burgmann Seals – Our engineers are specialists in Burgmann mechanical seal technology, ensuring precise replacements and custom designs.

• Quality Assurance – ISO‑certified manufacturing with rigorous testing for dimensional accuracy and performance.

• Fast Delivery – Large stock of standard Burgmann M7N mechanical seal sizes and efficient production for custom orders.

• Competitive Pricing – Factory‑direct pricing without compromising on material quality or workmanship.

• Technical Support – Pre‑sales consultation, installation guidance, and after‑sales service from our experienced team.

Product Specifications

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 m7n 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

FAQs

Q: Is Burgmann M7N mechanical seal the same as H7N?

A: They are very similar wave spring seals. Burgmann M7N is the newer, optimized design with the Super-Sinus spring. H7N is the older version. Our M7N replacement often supersedes the H7N.

Q: Is the M7N a direct replacement for the original Burgmann seal?

A: Yes, our Burgmann M7N Mechanical Seal is dimensionally and functionally identical to the OEM seal, ensuring drop‑in compatibility with your existing vertical turbine pump mechanical seal assembly.

Q: What temperature range does the Burgmann M7N support?

A: Standard version operates from -50 °C to +220 °C (-58 °F to +430 °F). High‑temperature variants are available upon request.