The NM-3 is a robust and versatile Rubber Bellow Mechanical Seal, widely recognized for its durability in general industrial applications. Its innovative design features a non-clogging elastomeric bellow that automatically compensates for shaft end-play and run-out, ensuring consistent sealing pressure.

Designed with a single coil spring, the NM-3 is driven directly by the shaft, making it exceptionally reliable for high-torque applications. It is the preferred choice for centrifugal pumps, mixers, and agitators handling water, sewage, oils, and weak chemicals.

Seal faces materials:

• Resin impregnated carbon (В)
• Antimony impregnated carbon (A)
• Spec. CrMo steel (Е)
• Tungsten carbide (U₃)
• Silicone carbide(Q₁, Q₂)
• Ceramic Al₂O₃ (V)

Elastomers:

• Fluorcarbon rubber, FKM (V)
• Nitrile-butadiene-rubber (P)
• Ethylene propylene rubber, EPDM (E)

Operation conditions:

• p = 16 bar
• t = -20 … 140°C
• v = 10 m/s

Type: Rubber bellow seal
Replacement: Burgmann MG9.., AES P0.., John Crane Type 1/Type 2