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Independent. Diagnosis first, parts second.

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Illustration of a plunger rod and pump seal. Generic drawing, not a photograph of this part. Illustration

This is an aftermarket part, not an original manufacturer part. Instrument names and part numbers identify what it fits and replaces; they remain the trademarks of their owners. The manufacturer, country of origin, rated life and warranty are stated in the quote, before you decide anything. If you need the OEM part, say so and I will quote that instead.

Pump and injector spares

Plunger holder for Shimadzu LC-20AD and LC-2010 pumps

Replaces OEM part number: 228-35602-91

Plunger holder for the LC-20AD and LC-2010 pump, cross-referenced to 228-35602-91. The holder is what keeps the plunger square to the seal, and it is the part nobody suspects. A worn or distorted holder lets the plunger run slightly off axis, which wears the seal unevenly and gives you a pump that keeps failing on one channel however many seals you fit. If you are on your third seal in a year on the same head, stop buying seals and look at this instead.

Type
Plunger holder
Fits
Shimadzu LC-10ADvp, LC-20AB, LC-20AD, LC-20ADXR, LC-30AD, LC-2010
Replaces
228-35602-91
Condition
new
Price
Quoted per order, in Canadian dollars

Before you order: if the instrument is misbehaving, tell me the symptom, not the part number. Lamps and seals get replaced for problems they did not cause. The first look costs nothing, and if this part is not the fix, I will say so.

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