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Install New Seals and Packing Nut — Inspect and Replace O-rings and Seat Washer

Beginner60 mins

Part of project

How to Fix a Leaky Faucet: A Step-by-Step DIY Guide · Step 3 of 3

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In this video

From your repair kit, take the new packing gasket and insert it into the faucet body over the stem. Place the new O-ring onto the new packing nut. Thread the new packing nut onto the faucet body and tighten it. Start by hand, then use a wrench or a 7/8-inch socket to snug it down firmly, but be careful not to crack the plastic.

Goal: Replace the Seals

  • Avoid overtightening the plastic packing nut to prevent it from cracking.
  • The new packing gasket may be cylindrical, unlike the old concave one. This is normal, as it will conform to the correct shape when tightened.

Used in this video

  • Socket Wrench Set (Tool Type: Hand Tools, Size/Capacity: 7/8-inch socket)Tightening the new packing nut.
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FAQs

What's the very first thing I need to do to safely start this faucet repair?

Always begin by turning off both the hot and cold water supply valves located under your sink. After that, briefly turn on the faucet to release any residual water pressure and ensure the water flow has completely stopped before proceeding.

The guide lists specific Milwaukee and HDX screwdrivers. Do I need these exact brands, or will generic tools work?

While specific brands are mentioned, the key is to have the correct *type* and *size* of screwdrivers for your faucet. You'll need a flat-head screwdriver for prying the decorative cap and another appropriate screwdriver (often flat-head or Phillips) to remove the handle screw. An adjustable wrench is essential for the packing nut.

What if I can't get the decorative cap off, or the handle screw is stripped or stuck?

Avoid forcing stuck parts, as this can cause damage. For a stubborn cap, try a thin plastic pry tool to prevent scratches. If a screw is stuck, a penetrating oil might help loosen it, or you may need a screw extractor if it's stripped beyond simple removal.

How much should I expect to spend on parts for this DIY faucet repair, and how long does it usually take?

Most faucet repair kits, which include new O-rings and seat washers, are very inexpensive, typically costing under $10-$20. The project is estimated to take around 60 minutes for beginners, potentially less if you're experienced or if the components are easily accessible.

Transcript
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see if that works for us so I grabbed those components out all right so really in the kit I'm taking the white nut the o-ring that's going to go on there all right so now we got the o-ring on and then this right hand gasket now don't worry the gasket that you took off had a concave shape this one just has a cylindrical shape that's okay that's still gonna work so you can either put it in here or you can actually put it on the stem itself and push it down and then and then push this new nut on there and when that tightens down it's going to conform to the shape of that that cone that's on the nut down again whenever you're dealing with plastic parts be a little careful don't don't over-tighten them you're gonna get yourself in a situation where you're gonna break the components and then you got to start over go get another kit all right that's pretty darn tight again my hand

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