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A best seal optimum for highly corrosive liquids
LB150 is a rotating type outside seal for chemical liquids (e.g. highly corrosive acid and alkaline liquids) that represents Eagle Industry’s outside seal technologies. LB150 can be widely used on various chemical pumps, and ensures superb sealing performance and durability.


  • An optimum choice for highly corrosive liquids due to its high corrosion resistance.
    A nonmetallic structure employed for the part in contact with the liquid.
  • Highly corrosion-resistant, high-grade metals used for the parts not in contact with the liquid.
  • Low-heat generation design.
  • Demonstrates excellent performance for slurry liquids and crystalline liquids
    (springs and drive pins located on the atmospheric side; an O-ring employed for the secondary seal)

* For crystalline liquids, quenching is recommended

Product specification example


Seal face: Silicon carbide
Seat: Silicon carbide

Secondary seals: FKM (V) or FFKM (K)

Metal parts: CrNiMo steel 316 (G)

Operating range

Pressure: 10 bar (145 PSI)
Temperature: −20 ºC to 100 ºC (-4 ⁰F to 212 ⁰F)

Sliding velocity: 20 m/s (66 ft/s)
Viscosity: 0.5 Pa・s

Solids content: 0.3 wt%

Main applications

Chemical pumps, etc.

Applicable ranges shown in the product introduction are limit values for each standard material.
Applicable ranges, performance data and figures can serve only as a guide for selection and therefore in actual use there will be some cases where general specifications cannot be applied due to unknown factors or constraints.
Please check the applicability before use.
The contents are subject to change without notice for improvement.


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