Seal Tight: Pro Plumber's Putty & Silicone Comparison 2023

Emily Jul 26, 2026

When it comes to sealing and waterproofing your home or fixing a leaky pipe, two popular options often cross paths: plumbers putty and silicone. While both are widely used, they serve different purposes and have distinct features. Let's delve into the world of plumbers putty and silicone, exploring their uses, advantages, and applications.

Plumbers Putty vs. Silicone Sealant
Plumbers Putty vs. Silicone Sealant

Plumbers putty and silicone are both versatile substances used in various plumbing, DIY, and even craft projects. But before we dive into their specific uses, let's quickly clarify what they are. Plumbers putty is a soft,servile clay-like substance that's typically gray in color. It's made from a blend of oils, linseed, and graphite. On the other hand, silicone is a synthetic rubber that comes in various forms, including aerosols, tubes, and gels. It's characterized by its odourless, stain-resistant, and non-adhesive properties.

How To Seal A Bathroom Sink Drain? (Caulk vs Putty)
How To Seal A Bathroom Sink Drain? (Caulk vs Putty)

The Role of Plumbers Putty

Plumbers putty is a staple in any plumber's toolkit. Its primary use is to create a watertight seal around pipe threads and fittings. It's often used to fill the space between the male and female threads on faucets, showerheads, and other plumbing fixtures. Plumbers putty's soft, malleable nature makes it an excellent choice for these tight spaces, as it can be easily molded to fill any gaps or imperfections.

How to Remove Plumbers Putty
How to Remove Plumbers Putty

Another significant use of plumbers putty is as a primer for pipes. When applied to the inside of a pipe, it prevents corrosion and keeps the pipe clean. This is particularly useful in preventing mineral buildup in water pipes. But that's not all; plumbers putty also works wonders in stopping minor leaks in sink basins, bathtubs, and showers. It can be used to fill and seal hairline cracks, broken tiles, and even worn-out grout, providing a long-lasting solution.

Plumbers Putty and Sink Leaks

How to Properly Use Plumber’s Putty
How to Properly Use Plumber’s Putty

Plumbers putty is a go-to solution for many DIY enthusiasts when it comes to fixing leaky sinks. Its unique ability to adhere to both metals and ceramics makes it an ideal choice for sealing leaks at the point where the sink drain meets the basin. By simply applying a small amount of putty around the drain's base and then reattaching it, you can stop the leak in its tracks.

However, it's essential to note that plumbers putty isn't suitable for all surfaces. It should not be used on PVC, CPVC, or flexible supply lines, as it can damage these materials over time. Additionally, it's not an appropriate substitute for plumber's tape, which is designed to create a watertight seal on smooth surface pipe threads.

Plumbers Putty Maintenance Tips

How to Use Plumbers Putty on a Bathroom Sink Drain | Homesteady
How to Use Plumbers Putty on a Bathroom Sink Drain | Homesteady

Like any other tool or substance, plumbers putty requires proper maintenance to function optimally. Always ensure your hands are clean and dry before handling putty to prevent contamination. Once you've used the putty, screw on the fixture firmly but not too tightly, as excessive pressure can cause it to extrude from between the threads and cause leaks.

Avoid using plumbers putty in areas with high temperatures, as heat can cause it to dry out and crack. Also, never use it to seal joints for water heater applications, as the high temperature could damage the putty and cause leaks.

The Versatility of Silicone

How Long Does Plumber’s Putty Take To Dry?
How Long Does Plumber’s Putty Take To Dry?

Silicone is another widely used substance in the plumbing and DIY world. Unlike plumbers putty, silicone comes in various forms, each with its unique advantages. It's commonly used for bonding, sealing, and coating surfaces, both indoors and outdoors. Its versatility makes it an excellent choice for various household projects, including bathroom and kitchen renovations, DIY crafts, and even automotive repairs.

One of silicone's standout features is its versatile adhesion. It can bond with a wide range of surfaces, including metal, glass, ceramics, plastic, and wood. Moreover, it has excellent weather-resistant properties, making it an ideal choice for outdoor applications and areas exposed to extreme temperatures.

Plumbers Putty vs Silicone: What to use and when (June 2026)
Plumbers Putty vs Silicone: What to use and when (June 2026)
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How Can You Soften Plumber’s Putty: Easy Techniques For Perfect Consistency
someone is pouring something into the sink
someone is pouring something into the sink
Everbuild - P13 Plumbers Putty 750g
Everbuild - P13 Plumbers Putty 750g
How to Remove Plumbers Putty
How to Remove Plumbers Putty

Silicone Sealants for Bathrooms and Kitchens

Silicone's waterproofing and mildew-resistant properties make it an ideal choice for bathroom and kitchen renovations. It's commonly used to seal gaps between tiles, countertops, and bathroom fixtures. When applied correctly, silicone can create a watertight, durable, and easy-to-clean seal that withstands moisture and heat.

When choosing a silicone sealant for your bathroom or kitchen, opt for one with an anti-microbial additive. This helps prevent the growth of mold, mildew, and bacteria, ensuring a clean, safe, and pleasant environment.

Silicone's Role in DIY and Craft Projects

Silicone's versatility extends beyond plumbing and waterproofing. It's extensively used in DIY and craft projects due to its adhesive and bonding properties. It can be used to attach dissimilar materials, reinforce joints, and even create unique textures and designs.

One of the most appealing aspects of using silicone in DIY projects is its non-stick property. Once the silicone has cured, it creates a barrier that makes it easy to clean and prevents corrosion and rust buildup. This makes it an excellent choice for various home improvement and repair projects.

Well, there you have it - a comprehensive overview of plumbers putty and silicone. Both substances have their unique advantages and uses, and understanding their differences is crucial when deciding which one to use for your specific needs. So, whether you're a seasoned plumber or a DIY enthusiast tackling home repairs, make sure you've got both plumbers putty and silicone in your toolkit for a comprehensive approach to your projects.