Rubber Bellow Seal – RBS-26

RBS-26 is single coil spring seal with rubber bellow mainly for use in waste water treatment plants in the sewage applications. The rubber bellow protects the shaft/ sleeve from fretting. The bellows are not subjected to any torsional stress. Torque transmission is through the spring and spring holder. Self aligning features accommodate abnormal shaft run out and primary sealing wear. The single coil spring will avoid effluent particles.

Seal Characteristics
  • Single Seal
  • Unbalanced
  • Independent of directions of rotation
  • Helical Coil Spring
  • Elastomer Bellow
  • Water Pumps
  • Sewage Pumps
  • Submersible Pumps
Performance Range
Shaft Diameter dl : 10…100mm
Pressure p : 10 bar (max)
Temperature t : -20…1400C
Velocity v : 10 m/sec
Seal Faces : Carbon, SiC, Ceramic,

Tung. Carbide

Metal Parts : SS304, SS316
Bellows : Nitrile, Viton
  A – Seal Face
B – Drive Sleeve
C – Drive Ring
D – Bellow
E – Spring
F – Holder
G – Stationary Seat
H – O-Ring


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