On Mon, 26 Mar 2007 19:10:09 GMT, Windswept@home (Jack) wrote:

There is no visual evidence -- to the naked eye -- of any
deterioration in old seats and springs that have allowed a faucet to
drip. The old seats and springs look exactly like the new replacement
seats and springs.

What is the typical reason that seats and springs fail over a period
of time?

They're compressed almost all the time. I guess both sprigs and seats
lose their springiness.

Is it usually the fault of the metallic spring, or the seat?
Thank You.

Don't know.

Did changing the seats and springs stop the dripping?

I had a Delta faucet and i changed the seats, springs, ball, and
nothing stopped the drpping. No detectable damage. Very frustrating.
Then someone gave me another Delta faucet, and it worked fine.