Clear Plastic Square Tubing: Our Sizes And Capabilities

Posted on January 3, 2022

clear plastic square tubingPlastic tubing is an essential part of conducting many different business projects. They help customers store goods and create piping systems for creative projects.

However, there are so many different types of clear plastic square tubing out there that it can be difficult for anyone in the middle of a project to know where to start.

If you’re trying to figure out what clear plastic tubes to use, you’re in the right place. Here’s what you need to know about our tubing sizes and capabilities!

Open-Ended Square Plastic Tubing

One of the first types of plastic tubing we offer is shaped open-ended plastic tubing. Here’s what you need to know about this type of plastic tubing and how it works.


Shaped open-ended tubes use plug caps to close the ends of the tube. They’re a great choice for anyone wanting a more symmetrical look because they can be made into squares, triangles, and other shapes.

This type of tubing is most frequently used to prevent the package’s contents from rolling while on a flat surface. Plug caps on these tubes help ensure the contents stay inside the tube, while the flat sides keep it from moving around.

Shaped open-ended tubes can be completely custom-built or can be provided in packages of 18″ lengths. The cases allow customers the freedom to cut the tubes to the desired length and to be more flexible with their projects.


Our tubing can be custom-sized to customer specifications. However, we have some pre-set sizes and specifications that can make choosing a type of tubing easier.

Our square open-ended tubing has the following specifications:

  • Nominal: 3/8, 5/8, 3/4, 1, 1 1/8, or 1 1/4
  • ID: 0.375, 0.625, 0.770, 0.030
  • WT: 0.012, 0.015, 0.018
  • OD: 0.399, 0.655, 0.800, 1.066, 1.036

We offer both vinyl and polypropylene caps for this shape tubing. The vinyl caps are slip-on caps while our polypropylene caps are plug caps.

In addition to our square open-ended tubing, we also offer triangle open-ended tubing. The specifications for this type of tubing are:

  • Nominal: 1/2
  • ID:  0.500
  • WT: 0.012
  • OD: 0.524

Our triangle caps are made of polypropylene. We only offer plug caps for our triangle-shaped open-ended tubing.


All of our plastic tubing is made out of cellulose acetate propionate. This material has been approved by the FDA for use with pharmaceutical and food products.

Since this material is cleared by the FDA, it’s perfect for many different uses. Customers are able to make their plastic tubing solution work for them by using this type of versatile shaped tubing.

Sealed Bottom Square Tubing

Not everyone needs open-ended plastic tubing. Sometimes, sealed bottom tubing makes more sense for your application. Here’s what to know about our sealed bottom square tubing.


Sealed tubes are great for preventing the contents of a package from falling out when standing up. Because they have a sealed bottom, you can hang your tubes without worrying about the bottom cap falling off and causing the contents to spill out.

Square sealed bottom plastic tubing is made by having a clear plastic base adhered to the bottom of the package. This creates a permanent seal that’s extra durable.

On top of that, they have a unique look. The square shape of these products makes them stand out and makes them a great choice for anyone wanting to get an edge over the competition.

Our square sealed bottom plastic tubes can be made to order, making it easy for the customer to get the look and size that they’re going for. All you have to do is let us know what the purpose of your tubing is and what specifications you need and we’ll do the rest!

Finally, since this type of tubing only requires one plug cap, it’s much easier to assemble the product. This can help businesses to cut back on labor costs and to save themselves valuable time when putting together their products.


We offer multiple sizes of square sealed bottom tubing. Here are the specifications for these types of tubes:

  • Nominal: 3/8, 5/8, 3/4, 1. 1 1/8, 1 1/4
  • ID: 0.375, 0.625, 0.770, 1.030
  • WT: 0.012, 0.015, 0.018
  • OD: 0.399, 0.655, 0.800, 0.066, 0.036

Just like our open-ended square tubing, we offer two types of caps for our sealed bottom tubes. You can either opt for vinyl slip-on caps or polypropylene plug caps.

In addition to our square sealed bottom tubing, we also offer triangle sealed bottom tubes. The specifications for this shape tubing are:

  • Nominal: 1/2
  • ID: 0.500
  • WT: 0.012
  • OD: 0.524

We offer polypropylene plug caps for all our triangle tubing. This way, you can seal off the top of your tubing once you’ve filled it with whatever material you’d like.


Just like our open-ended plastic tubing, we make our sealed bottom plastic tubes out of cellulose acetate propionate. This material, more commonly known as CAP, is a completely safe material for many applications.

Some of the more common uses for plastic tubing that we see include:

  • Pharmaceutical tubing
  • Laboratory tubing
  • Candy tubing

Because CAP is an FDA-approved material, it’s appropriate for these types of applications and more!

Find the Perfect Clear Plastic Square Tubing

With this guide, you’re on your way to finding the perfect clear plastic square tubing. Each of our clear plastic tubings offers different capabilities and comes in different sizes so that you can find exactly what works for your specific situation!

Browse through our many products and you’ll easily be able to choose tubing that makes sense for your project. No matter what it is you’re looking for, we’ve got you covered.

So, are you ready to get started placing an order for clear plastic tubing? Get in touch today and order your tubing!