We offer a specialized Protected spring mechanical seal, the BV-3 model. Unlike standard designs, this seal features a stationary spring unit, which ensures exceptional stability and reliability even in challenging operating conditions.

The design keeps the spring out of contact with the product, making it ideal for high viscosity and abrasive media. With electropolished metal parts and gap-free construction, it is perfectly suited for sterile applications.

It is a balanced seal that operates independently of the direction of rotation. The fitting dimensions are strictly according to DIN 24960 (EN12756).

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)

Operating limits:

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

Axial movement: ±1 мм

Type: Pusher mechanical seal
Replacement: Burgmann HRN