Tighten and Test for Leaks

What happens here

Once the plumber's tape is applied, screw the packing nut back onto the faucet body by hand until it's finger-tight. Then, use channel lock pliers to gently tighten the packing nut further, but do not overtighten. It should be snug enough to prevent leaks but still allow the faucet handle to turn easily. Next, use a screwdriver to turn the valve stem counter-clockwise to fully open the faucet. Finally, turn the main water supply back on and check for any leaks from the faucet. Allow water to run for a moment, then turn the faucet off to ensure it seals properly.

Goal: Secure the packing nut and confirm the faucet is no longer leaking