We offer a robust General purpose double mechanical seal, the NV-1D model, designed for water and chemical pumps requiring a double seal arrangement. This model features a robust multiple spring design, ensuring uniform face loading and reliability in demanding applications.

It is an unbalanced seal and is independent of the direction of rotation. The fitting dimensions strictly follow the DIN 24960 (EN12756) standard, making it an ideal choice for standard industrial housings.

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 M74-D