We offer a robust General purpose mechanical seal, the NV-2 model, engineered for water and chemical pumps. Unlike multi-spring designs, this model features a robust single central spring, which provides excellent reliability especially in media containing solids or high viscosity.

It is an unbalanced seal and is independent of the direction of rotation. The fitting dimensions strictly follow the DIN 24960 (EN12756) standard, ensuring easy replacement and compatibility.

Seal faces materials:

• Resin impregnated caron(В)
• Antimony impregnated carbon (A)
• special CrMo steel(Е)
• tungsten carbide (U3)
• silicon carbide (Q1, Q2)
• ceramics Al O (V) 2 3

Secondary sealing materials:

• Fluorcarbon rubber, FKM (V)
• Nitrile-butadiene-rubber (P)
• Ethylene propylene
• rubber, EPDM (E)
• Perfluorocarbon rubber, FFKM (for example Kalrez®, etc.), (K)
• PTFE

Operating limits:

• p = 16 (25) bar
• t = -50 … 220°C
• v = 20 m/s

Type: Pusher mechanical seal
Replacement: Burgmann M78N