The NM-LT is a specialized Rubber Bellow Mechanical Seal, engineered specifically for compatibility with Grundfos centrifugal pumps. Unlike standard seals, this model fits the unique shaft and housing requirements of Grundfos vertical and multistage pump series.

This robust sealing solution offers a perfect operational fit, ensuring leak-free performance and easy installation during maintenance. It covers the specific shaft diameters essential for these pumps (12mm to 33mm). 

Material options:

• BUBE – Tungsten carbide / Carbon-graphite – EPDM
• BBUE – Carbon-graphite / tungsten carbide – EPDM
• BQQE – Silicon carbide / silicon carbide – EPDM
• BQQP – Silicon carbide / silicon carbide – NBR
• BQQV – Silicon carbide / silicon carbide – FKM

Technical Specifications:

• Type: Rubber bellow seal
• Shaft diameters: 12 mm, 16 mm, 22 mm, 33 mm

Compatibility:

For pumps: Grundfos CR, LM, LP, NM, NP, TP

Replacement:

• Grundfos BUBE, shaft 12 mm – 96409263, 98284949
• Grundfos BQQE, shaft 12 mm – 96488632
• Grundfos BUBE, shaft 16 mm – 00425062, 00485351, 96409265
• Grundfos BBUE, shaft 22 mm – 00485278