Grundfos 96414028 Service Kit

The Grundfos 96414028 Service Kit is a critical maintenance solution for restoring the integrity of CR and CRN 1, 3, and 5 series pumps featuring the 12mm shaft diameter. This shaft seal kit utilizes a HQQE cartridge seal design, featuring Silicon Carbide/Silicon Carbide (SiC/SiC) seal faces and EPDM elastomers. Engineered for high-temperature and chemically demanding applications, this replacement cartridge seal ensures optimal fluid containment and prevents premature failure during HVAC pump repair. The balanced seal design minimizes friction-induced heat, maintaining the pump hydraulic performance while extending the service interval of the Grundfos multistage pump assembly. As a technician, ensuring the precise fitment of this OEM Grundfos part is essential for preventing cavitation-related damage and maintaining system pressure integrity in commercial water boosting and boiler feed applications.

• HQQE Seal Construction: High-grade Silicon Carbide faces provide superior abrasive resistance in aggressive fluid environments.
• Direct OEM Fitment: Specifically engineered for Grundfos CR1, CR3, and CR5 models to ensure exact tolerances and leak-free operation.
• EPDM O-Rings: Optimized for high-temperature water applications and compatible with most glycol-based systems.
• Cartridge Design: Simplifies field installation, reducing downtime and eliminating the risk of seal face contamination during the pump maintenance process.

What fluid temperatures is the HQQE seal rated for?
The EPDM-equipped Grundfos 96414028 is typically rated for temperatures ranging from -22°F up to 248°F, making it suitable for hot water circulation and various industrial processes.

Can I use this kit for CRN models?
Yes, this 12mm shaft seal kit is compatible with both standard CR (cast iron) and CRN (stainless steel) variants of the 1, 3, and 5 series pump stacks.

Does this kit include the secondary O-rings for the pump sleeve?
The 96414028 kit focuses on the cartridge shaft seal assembly; always verify if your specific stack rebuild requires additional chamber-stack O-rings depending on the pump height.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.