Armstrong 4280 S-6 Repair Kit


Kit to replace seal in Armstrong Model 4280 New Style circulator.

New style circulator can be determined by the discharge line being in the center of the volute. The old style design has the discharge line offset to on side.

Includes 6" casing gasket 

Stainless shaft sleeve

Mechanical seal

Correct seal replacement kit for:

4280 1.5x1x6,   4280 3x1.5x6,   4280 3x2x6,   4280 3x2.5x6,   4280 4x3x6

4280 4x3x6W with 1150 RPM motor 5 HP and smaller

4280 4x3x6W with 1750 RPM 10 HP and smaller

4280 4x3x6W with 3500 RPM motor 15 HP and smaller

Shipping rate for continental USA

  • Model: 4280S-6
  • Manufactured by: Armstrong
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