Should spiral balances be lubricated periodically

A home owner from Missouri says:
September 3, 2010
Do these need to be lubricated periodically? If so, what should be used?
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Paul Sr. from SWISCO responded:
September 11, 2010
Normally it is not necessary to lubricate spiral balances unless the windows are in constant use or near water. You can use white lithium grease or Three-In-One oil on the spiral. If you want to lubricate the track the window sash rides in, use silicone spray.
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