Insulation in spiral balance

A home owner from USA says:
Attached are photos of my existing spiral balance.

There is, was appears to be, insulation stuffed up around the spiral
balance.

I'm assuming that I need to replace this insulation when I replace
the spiral balance?

Any information on this would be helpful.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Hey there! Thanks for your question. The foam part you are looking for is our 26-139 single hole aligner. They are usually used with the Series 600 tilt balance.
How to identify a replacement spiral balance
How to identify a replacement spiral balance
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How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
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How to adjust a spiral balance on a tilt window
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