A faucet's internal parts wear out, requiring replacement.
The American Standard fixture company prides itself on its faucets. All new faucets are sold with a warranty against defective materials or workmanship. However, all American Standard faucets are mechanical devices. Like all mechanical devices, parts wear out. The company understands this, so it has a well-stocked parts department in case your Hampton spout needs parts.
Aerators
Because tap water has dissolved minerals, the aerator screen may wear out or become clogged. This is a common repair area. If you need an aerator or screen, the American Standard company carries a variety of aerators. Since many models in the Hampton line exist, you have to determine the exact part number. This is usually stamped on the outside of your aerator ring. If the part number is worn off, American Standard has a customer service number. Call them to determine the model you have.
Cable Assemblies
If your Hampton spout has a lever to close the drain, the cable may eventually break. If so, the lever on the spout will not close the drain flap. American Standard stocks the cable assembly. Changing the cable is a little tricky, because you will have to crawl below the vanity or sink to get at the attachment points.
Diverter
If your spout is leaking at the diverter, more than likely the internal mechanism wore out or corroded. The diverter is the part below the handle that controls water flow. Understanding hard water corrosion, American Standard stocks the replacement parts. Again, your specific Hampton faucet should have the part number stamped on the side of the diverter assembly. American Standard stocks both single handle and dual handle diverters.
Spout Sealing Rings
If your spout is leaking at the base where it meets the faucet body, the sealing O-rings are decayed. The culprit is hard water that has corroded the rubber. If this is the case, American Standard has both an entire seal kit or just the main O-ring that has a square cross section.
Spouts
If your spout is worn out completely, American Standard offers replacement spouts. You will have to match up an exact spout to your Hampton faucet. However, you may want to customize the faucet and obtain a different spout that matches up with the faucet body.