The NT-1 is a simple, single Conical Spring Mechanical Seal, specifically designed for lighter duty applications. It is engineered for circulation pumps in water supply and heating systems, as well as for use in food processing and chemical pumps.

This seal features an unbalanced design with a conical spring, making its operation dependent on the direction of rotation. It is manufactured to meet mounting dimensions according to DIN 24960 (EN12756).

Seal faces materials:

Rotating part:

• Resin impregnated carbon (B),
• Antimony impregnated carbon (A)

Stationary Seat: 

• Special CrMo steel (E),
• Tungsten carbide (U3),
• Silicon carbide (Q1, Q2),
• Ceramic Al2O3 (V)

Operating limits:

• p: 10 bar

• t: -20 … 180°C

• v: 15 m/s

• Allowable axial movement: ±1.0 mm

Type: Conical spring seal

Replacement: Burgmann M2N, AES T07D, Roten UNITEN 22, Hecker HN 400A