Key Features

• Tool-Free Installation: The pre-assembled cartridge design ensures the grundfos pump mechanical seal is preset to the correct compression. Simply slide it onto the shaft and tighten the gland bolts, eliminating complex measurements and the risk of installation errors.

• Shaft Protection: The flexible rubber bellows acts as a secondary seal and compensator, absorbing vibrations and misalignments. It prevents the seal from gripping the shaft too tightly, thereby eliminating fretting corrosion and shaft wear.

• Balanced Design: Engineered as a balanced seal, grundfos pump mechanical seal reduces the closing force on the seal faces. This allows it to operate efficiently at higher pressures (up to 1.2 MPa) without excessive face wear or heat generation.

• Chemical & Thermal Resilience: The standard EPDM rubber offers excellent resistance to hot water, steam, and mild alkalis, while optional FKM (Viton) is available for applications involving oils, fuels, and stronger chemicals, with a temperature range from -20°C to +180°C.

• Interchangeable Compatibility: 100% dimensionally interchangeable with original Grundfos Type H seals for shaft sizes 12mm, 16mm, and 22mm, ensuring a direct drop-in replacement without pump modification.

Company Advantages

30+ Years OEM Expertise: Miaoyu Seals leverages over three decades of experience in manufacturing grundfos pump mechanical seals, ensuring deep technical knowledge of Grundfos pump specifications and failure modes.

Advanced Material Sourcing: As a leading grundfos pump mechanical seal manufacturer, we utilize pressureless sintered silicon carbide (SSiC) for superior wear resistance and thermal shock performance compared to standard reaction-bonded materials.

ISO 9001 Certified Production: Our 4000+ sqm manufacturing base operates under strict quality control, with every seal undergoing dimensional and pressure testing before shipment.

Global Supply Chain: With exports grundfos pump mechanical seals to over 50 countries, Miaoyu maintains a robust inventory of standard sizes, offering fast delivery and just-in-time supply to minimize customer downtime.

Custom Engineering Support: Beyond standard replacements, our technical team at grundfos pump mechanical seal can provide custom solutions for non-standard shaft sizes or extreme operating conditions.

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 grundfos pump mechanical seal 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 grundfos pump 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: Does this seal replace the HQQE and HQQV codes?

A: Yes. We offer exact material matches: select EPDM (HQQE) for drinking water and heating applications, or FKM (HQQV) for industrial oils and aggressive fluids. The dimensions are identical to the OEM part, ensuring a perfect fit.

Q: Is this seal compatible with my Grundfos pump model?

A: this seal is designed as a direct replacement for Grundfos Type H seals used in CR, CRI, and CRN series pumps. Please confirm your pump's shaft diameter (12mm, 16mm, or 22mm) before ordering.