Grundfos 00485113 Shaft Seal Kit

The Grundfos 00485113 Shaft Seal Kit is a critical maintenance component designed for high-performance Grundfos LM/LP/NM/NP series in-line centrifugal pumps. Engineering with an AUUE 16MM mechanical seal configuration, this kit utilizes tungsten carbide/tungsten carbide seal faces and EPDM elastomers to ensure a leak-proof interface under demanding pressure cycles. As a veteran technician knows, the integration of EPDM O-rings is vital for systems handling water and glycol mixtures within a temperature range of +5°F to +250°F.

Properly maintaining the mechanical shaft seal prevents fluid bypass and protects the motor stool from moisture ingress. This Grundfos pump repair kit is a direct OEM replacement, ensuring the 16mm shaft diameter seats perfectly without the friction losses associated with aftermarket alternatives. Whether you are servicing a chilled water system or a boiler/hydronic heating application, utilizing this genuine Grundfos spare part ensures system pressure remains consistent and mechanical integrity is preserved during high-torque operation.

Key Benefits:

• Engineered Compatibility: Specifically designed for Grundfos LM, LP, NM, and NP pump models for a precision fit.
• Durable AUUE Construction: Features tungsten carbide seal faces for superior wear resistance in abrasive or high-pressure environments.
• Chemical Resilience: High-grade EPDM elastomers provide excellent sealing performance in water-based and glycol applications.
• Complete Service Set: Includes the rotating part, stationary seat, and necessary O-rings to refresh the shaft seal chamber completely.

Common Questions:

• What pump models does the 00485113 kit fit? This kit is the standard 16mm seal for the Grundfos LM, LP, NM, and NP series.
• Is this seal suitable for hot water systems? Yes, the EPDM and tungsten carbide materials are rated for hydronic heating applications up to 250°F.
• How do I ensure a leak-free installation? Technicians should always clean the shaft sleeve and lubricate the EPDM O-rings with soapy water before pressing the seal into the pump head.

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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.