Key Features

• The BAQE Standard: The definitive replacement for the Grundfos "BAQE" seal code (Bellows, Carbon, SiC, EPDM).

• Clean Water Specialist: Mechanical pump shaft seals are designed specifically for HVAC heating, cooling loops, and tap water boosting where fluids are clean.

• Silent Running: Carbon Graphite faces have a low coefficient of friction, ensuring quiet operation and low energy consumption, crucial for building services.

• Self-Lubricating: The Carbon face protects the seal during dry start-ups or air-locks in the system, preventing immediate failure.

• Adhesion Resistance: Carbon does not "stick" to the SiC stationary face during long periods of inactivity (e.g., summer shutdown of heating pumps), ensuring reliable restart.

Product Specifications

• Compatibility: Direct replacement for Grundfos CR, CRE, CRI, CRN, CM, SP, NB, and submersible pump series.

• Shaft Sizes: Standard sizes 12mm, 16mm, 22mm, 32mm (custom sizes available).

• Materials: Sealing faces: SiC/SiC, SiC/Carbon, or TC/TC; Elastomers: EPDM (standard), Viton/FKM (chemical/high-temp); Metal parts: SS304/SS316.

• Operating Conditions: Temperature range: -20°C to +180°C (EPDM), up to 200°C with special elastomers; Max pressure: 2.5 MPa (25 bar); Speed: ≤20 m/s.

• Design: Cartridge-type (pre-set, easy installation) or component seals; Balanced design for high-pressure applications.

• Applications: Clean water supply, HVAC circulation, boiler feed, industrial cooling, and mildly corrosive fluids.

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 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 about Grundfos Mechanical Seals for Water Pump

Q: Which Grundfos pump models are these mechanical seals compatible with?

A: Our seals are direct replacements for popular Grundfos series including CR, CRE, CRI, CRN, CM, SP, NB, and TP/TPD. They are designed for standard shaft diameters (12mm, 16mm, 22mm, 32mm). For exact matching, please provide your pump model number or original seal part number.

Q: Are these cartridge-style or component seals? How difficult is installation?

A: We primarily supply cartridge-style seals, which are pre-assembled and preset for easy, tool-free installation. Simply slide the cartridge onto the shaft and tighten the gland bolts. Component seals are available for specific older models upon request.

Q: How do I confirm the correct seal size and place an order?

A: Check your pump nameplate for the model number (e.g., CR10, CM5) and measure the shaft diameter. You can also provide the original Grundfos part number. Send these details for a precise quote. We ship globally with standard lead times of 7–15 days.