How to Stop Brass Fittings From Leaking

Leakage on fittings and pipes may lead to many losses, such as wasting essential resources from nature, raising utility bills, and causing hazards on your property. Even though preventing a leak is the best method to apply, sometimes you cannot help it to happen.

The guide below will tell you how to stop brass fittings from leaking in a step-by-step tutorial.

How to Stop Leakage on Your Brass and Copper Fittings

Most brass fittings are connected to copper pipes using compression fittings. These fittings consist of a compression ring inside, called a ferrule, and a compression nut on the outside.

If you use compression fittings, no sealant is needed for the thread because the ferrule, sandwiched between the sealant nut and the pipe, creates a secure seal.

Step-by-Step Guide

Unscrew the Threaded Fittings: Begin by unscrewing both threaded fittings bound together.
Clean the Threads: Clean the grit and residual of the previous sealant from both threads. After cleaning, dry them with a towel.
Apply Pipe Thread Sealant: Apply pipe thread sealant to the male part of the thread.
Reassemble the Fittings: Screw the fittings together securely. Wipe any excess thread sealant with a towel.
Let the Sealant Dry: Allow the sealant to dry entirely before running water through the pipe.

Using Teflon Tape

Wrap in the Right Direction: When using Teflon (PTFE tape), wrap it clockwise around the threads to ensure it doesn’t unravel when connected.
Avoid Over-Tightening: Over-tightening can damage the fittings, so tighten them carefully to avoid damage.
Use on Male Threads Only: Do not use Teflon tape under compression nuts or on flare threads. Use it only on male threads to ensure a tight seal.

Expert Tips and Best Practices

Check for Damage: Regularly check your fittings for signs of damage or wear and tear. Replace any damaged fittings promptly.
Tighten Connections Properly: Ensure all connections are properly tightened to prevent leaks. Use pliers or an adjustable wrench if necessary.
Apply Sealant Paste: For extra protection, consider using a combination of Teflon tape and a silicone-based joint compound. Wrap the tape first, then apply the joint compound around the thread for a leak-free seal.

First-Hand Knowledge

I once encountered a persistent leak in my home’s plumbing system. Despite tightening the fittings, the leak continued. Following the steps above, I applied Teflon tape correctly and used a joint compound. The leak stopped immediately, proving the effectiveness of these methods.

Common Issues and Solutions

Issue	Solution
Visible leaks	Tighten connections and apply sealant
Discoloration or mineral deposits	Check for corrosion and replace fittings if necessary
Loose connections	Use Teflon tape or plumber’s putty