Part No. Description
A Retainer
B Seal Ring
C O-Ring
D Thrust Ring
E Snap Ring
F Spring
G Grub Screw
H Stationary Seat
I Stationary Packing
Seal Characteristics Materials
Single Seal Seal Faces : Carbon, SiC, Tung. Carbide
Balanced Metal Parts : SS304, SS316, Hasetlloy-C, Alloy 20
Capsulated Spring O-rings : Viton, Nitrile
Independent of direction of rotation Thrust Ring

Type DB-SL-250 is the balanced seal without need for step sleeve. This seals are designed for media containing solids or with high viscosity. The springs are protected from media, thus no clogging of springs or springs compartment, resulting in high reliability.

Performance Range
  • Shaft Diameter d1 : 18...150mm
  • Pressure p : 25 bar (max)
  • Temperature t : -20...140 C
  • Velocity v : 20 m/sec
  • General Chemicals
  • Food Industries
  • Media Containing Solids