Key Features

• Direct Burgmann M78N Interchangeability: Roten Type 877 is engineered to match the exact dimensions (d, D, L1) and performance specifications of the Burgmann M78N series. This ensures a perfect drop-in replacement without pump modifications, offering a cost-effective alternative for API 610 and chemical pump applications.

• Dual-Seal Safety & API Compliance: As a compact double/tandem cartridge seal, it provides dual containment for hazardous or volatile media. The design meets the safety standards required for critical services, preventing environmental leakage and ensuring compliance with industry regulations.

• Flexible Flushing Configurations: This seal supports both pressurized and non-pressurized barrier fluid systems. It can operate effectively with a pressurized barrier (typically 1-2 bar above process pressure) for zero-emission applications or with an unpressurized buffer for backup protection.

• Chemical Inertness: The switch to a PTFE wedge allows standard Roten-style seals to operate in fluids that would destroy NBR or EPDM rubber.

• Bi-Directional & High-Pressure Operation: The multi-spring cartridge design is rotation-independent and handles pressures up to 20 bar (2.0 MPa) and temperatures from -40°C to +200°C. This makes it suitable for a wide range of demanding industrial conditions without requiring specific rotation direction.

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 Roten Type 877 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

FAQs

Q: Is the Roten Type 877 a direct dimensional equivalent to Burgmann M78N?

A: Yes. MIAOYU's Roten Type 877 is manufactured to the same dimensional standards (shaft diameter d, housing diameter D, working length L1) as the Burgmann M78N series. It is a direct interchangeable replacement for applications in chemical and API pumps.

Q: What are the key differences between Type 877 and a standard single seal?

A: The Type 877 is a double (tandem) cartridge seal featuring two sets of sealing faces. This provides a safety barrier zone, making it essential for hazardous or expensive media where a single seal failure is unacceptable. Standard single seals (like Roten Type 3) do not offer this secondary containment.