What Color Teflon Tape For Water?

Teflon tape, a type of PTFE, is one of the top sealants used for plumbing projects. Due to its unique properties, Teflon tape can be used for other projects at home. To reduce the chances of confusion, different colors of Teflon tape are used for various purposes. For example, the yellow Teflon tape is only used for gas fittings. 

Deciding which color o use for a specific purpose is not very hard. In this article, I will explain how each color of Teflon tape suits its purpose. I will also give you the main difference between the main Teflon tape. Stay tuned. 

What Color Teflon Tape for Water?

When shopping for Teflon tape, you might get confused by the different colors of Teflon tape. The thing is that different colors of Teflon have different purposes. For example, white is the standard tape used for most plumbing projects, while yellow cannot be used for other projects other than yellow tapes.

Water Color Tree
Water Color Tree

Despite the color difference, all Teflon tapes have almost similar excellent properties. 

  • Teflon tapes are naturally hydrophobic, which means it is water repellent making them ideal for water plumbing.
  • PTFE tape is chemical resistant and ideal for solvents and gases areas. 
  • It is resistant to corrosion: Teflon tapes are inert. As a result, it cannot react with Oxygen to form lust. This makes it ideal for water supply lines.
  • High-temperature resistance: Plumbing tapes can withstand temperatures of between -260-260°C. You can therefore use it in the hot water supply line. 
  • Low Friction: The additional chemical used in Teflon tapes makes them have low friction. You will therefore have more minor issues when tightening seals. 
  • It is slippery: Teflon tape is very slippery. This makes it easy to use as sealants in pipes. You can use Teflon tape in copper and steel pipes. It lubricates the joints. You cannot, however, use Teflon tape in plastic tubes. 
  • Teflon tape is nonstick: Teflon tape does not stick-on pipes during removal. You can therefore replace the tape without the need to scrap the glue. 
  • Plumbing tape is bendy and pliable: You can therefore wrap it around joints threads without a struggle. 

The unique properties of each Teflon tape make it ideal for different purposes. Initially, most Teflon tapes were made of white color. However, after evolving different plumbing needs, manufacturers came up with different colors. 

What Do the Colors on Teflon Tape Mean?

There are six different colors of Teflon tapes. Each tape has unique properties, making them ideal for its specific purpose. 

In detail, we will provide you with the information required to choose the suitable Teflon tape for your project. 

White Colored PTFE

White PTFE is used in the piping industry as the initially available tape. In addition, it is used in low pressured residential hoses and taps. 

Silver Colored PTFE

Silver-colored PTFE tape has some grains of nickel. This makes it suitable to be used as a sealant or lubricant. In addition, it can be used in brass, stainless steel, and aluminum pipes. 

Copper-colored PTFE Tape

Copper-colored tapes are used as a lubricant. This lubricant is ideal for mechanical applications and not for physical applications. 

Yellow-colored PTFE Tape

Yellow Teflon tapes have a triple density of the standard tape, making them ideal for critical natural gas and oxygen fittings applications. 

You can use the Teflon tapes color chart to find the right type of Teflon tape for your project. 

Teflon Tape Color Chart

Since each Teflon tape has unique properties, it would be better if you learned which color suits which project. 

Yellow tape should always be used for gas fittings due to its high density. While on the other hand, pink plumbers tape is ideal for water fittings. Some of the additional important information about plumbing tapes is discussed below.

What is Blue Teflon Tape For?

Blue Teflon tape is made to be used as sealants for plumbing projects involving stainless steel, copper, PVC, and others. Blue tape is compatible with several gases and liquids. 

What is the Yellow Teflon Tape For?

Yellow Teflon tape is an ideal sealant for fittings that deal with gases like Butane, natural gas, and Oxygen. Of course, it would be best if you did not dare attempt electric projects. 

What is red Teflon tape for

Due to its high density, red Teflon tape can be used as a sealant in wide pipes like those in water distribution pipes. 

What is Pink Teflon Tape Used For?

Most plumbers that deal with water lines use pink Teflon as the plumbing tape. Pink Teflon tape is inert and can withstand high temperatures and pressure. It can therefore be used in hot water feeding lines. 

Can You Use Blue Teflon Tape on Water Lines?

Provided all the other requirements are fulfilled, you can use blue plumbing tape on water lines. 

Blue plumbing tape has a high density that ensures a leak-proof connection. A few wraps of this tape how’s a little further. 

Difference Between the Red and Blue Teflon Tape

Although both red and blue Teflon tapes can be used for water fittings, the two are very different in terms of chemical composition and properties. 

Red Teflon Tape

Red Teflon tape has some fantastic properties that make it suitable for its use. 

Physical appearance: For starters, the red tape is not red in its self looks pink. However, its container is red. 

Density: 1.5 g/cm3

Pressure ratings: Seals fitting that carries water with a maximum pressure of 4371 Psi.

Knowing the pressure rating of a sealant is essential in determining the amount of tape you will use. 

Strength: 10-17 N/mm2

Temperature range: Red tape can accommodate temperatures of +260 °C to 260 °C.

Uses: Can be used in wide water distribution pipes up to 2 inches in diameter. 

If used correctly, Red plumbing tape can protect a leak for more than 2 years. However, you should check your seal regularly. 

Blue Teflon tape

Blue Teflon tape comes in Monster and mini monster form. 

Physical appearance: Blue

Density: 0.8 g/cm3

Pressure Ratings: Blue tape can accommodate a pipe carrying water at a maximum pressure of 10,000 Psi.

Strength: 15 N/mm2

Temperature ratings: -260 °C to 260 °C. 

Application: Due to its dense nature, blue Teflon tape can be used as a sealant in pipes carrying;

  • Concentrated and dilute acids. If using blue tape for acids, you should check the precautions. 
  • Alcohol
  • Ammonia
  • Fatty acids
  • Water 
  • Jet fuel
  • Hydraulic fluids
  • Compressed air
  • Glycerine
  • Mineral oils
  • Cutting oils
  • Ketones
  • Liquid soaps
  • Nitrogen
  • And chlorinated solvents. 

Blue Teflon tape’s Tensile strength and density are five times the standard tape making it suitable for the above uses. You should, however, not use Blue Tape on gas fittings. 

The table shows the few differences between Red and blue Teflon tapes.

PropertiesRed Teflon tapeBlue Teflon tape
Density1.5 g/cm30.8 g/cm3
Composition99% PTFE99.6% PTFE
Tensile strength10-17 N/mm315 N/mm3
Pressure rating4371 Psi10,000 Psi
Temperature range-260 °C to 260 °C-260 °C to 260 °C
ApplicationsWide water distribution pipesVariety of uses

The specification of the pipes is to help you know the option of tapes you have for your plumbing projects. Some of the projects are complicated and should always be done with the help of experts. 

Both PTFE tapes cannot be used as sealants in gas fittings. This is because they also start decomposing when subjected to temperatures above 300°C. 


Knowing the suitable sealant tape for your plumbing projects will quickly help you plan your DIY. In addition, the guide above will help you choose the right video for every project. 

White Teflon tape is the standard tape that has been in use for years as sealants for water pipes. However, more tapes were created after more demand for different types arose. The colors make it easy to know what to use when.

Yellow Teflon tape is designed specifically for gas fittings. 

Red Teflon tape is ideal for wide water pipes of diameter between 3/2 inches and 2 inches. 

Blue Teflon tape has a strength 5times that of white Teflon tape. 

All the other tapes are discussed above in this guide.

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