Hi, George, and welcome to Airforums.com!
Your tap is probably made by one of the major home plumbing manufacturers. Our '74 is made by Moen, for example.
I don't know if yours is made by Moen, too, but that brand has a lifetime guarantee.
Why don't you post some photos of your faucet, so we can see what it is. You may be able to get parts at Lowes of Home Depot, or free, if it's a Moen!
Let us know if you need help posting photos.
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