Seeing is Believing: Hypodermic Tubing Samples

Hypodermic Sample Card FRONT 1-30-2018Most researchers we work with don’t order a 60″ piece of hypodermic tubing from us because that’s exactly the size they need. They order it because it’s the industry standard, and they’ll figure out how to make it work for their application once it reaches the lab. But as the resource for R&D, that’s not good enough for us at Component Supply.  We know there is a better way. That’s why our fabrication division exists. CS Custom Fab can cut, deburr and clean this material to our customers’ specifications with speed, affordability, and precision.

But we know our R&D friends are busy, and the extra steps of requesting a quote or sending a drawing are sometimes cumbersome – especially if you don’t know what you’re getting. So, we’ve decided to send you a sample of our straight and bevel cut hypo tube whenever you purchase any quantity of hypodermic tubing. We’ve always believed that it is our responsibility to put the best components in the hands of the brightest researchers and product designers so they can change the world. We just had to get these samples into your hands so you can see exactly what we do in CS Custom Fab that makes the work of our customers so much more efficient.

One more thing: we treat our stock cut pieces the same way: These pieces are cut, deburred and cleaned just like our custom jobs but with no minimum. We look forward to hearing from you!

The mission of Component Supply is to be a resource for reseachers and product designers by connecting them with the components and knowledge they need to change the world.

What is CS Custom Fab?

Part Ends-bluebgAt Component Supply, we pride ourselves on being a resource for research and development with our comprehensive offerings, short lead times and low minimums. But, sometimes that’s not enough. Most of our customers don’t need a 60” piece of hypodermic tubing, a 72” piece of wire or a linear yard of mesh. The material needs some secondary operation performed on it for their application.

That’s where CS Custom Fab comes in by specializing in the quick, efficient modification and fabrication of parts for both research and production. Our long history of working closely with researchers and developers enables us to understand how a modified component can streamline a design or process. We work with engineers who are designing products in the earliest stages of development, and we enjoy the challenges that come with adjusting their designs. We excel at developing efficiencies in production to keep up with increased demands. Our ability to draw from various products and the depth of material we have on hand allow us to meet the production needs of our customers. Component Supply’s Custom Fab engineers can help you work through an idea you are pursuing, provide insight into your drawings and produce quality products quickly.

At Component Supply, we understand the challenges facing research labs. Knowing the stress of budget constraints, fast-approaching deadlines and rising expectations in technological advancement, our Supply and Custom Fab divisions are assisting from the earliest prototyping stages through the transition into production. It’s just another way we fulfill our mission to connect researchers and product designers with the components and knowledge they need to change the world.

Supplying Hypodermic Tubing the Component Supply Way

We have been supplying and working with hypodermic tubing since 1964. Whether it’s small quantities for researchers and developers, tubing for production or custom cutting or fabricating parts from hypodermic tubing, we have learned the needs of our various customers when it comes to standard lengths, tolerances and packaging.

In general, we know that most people do not need a 30-inch or 60-inch piece of hypodermic tubing. Most users will do something else with it either in-house, or they’ll have us make what they need. But regardless, customers buying standard lengths for production or R&D really do (and should) have some standards. For example, holding a +/-0.5-inch tolerance on a piece of tubing for 30 inches or 60 inches long should not be a challenge. In fact, holding a 1/8-inch tolerance shouldn’t even be a challenge. But, even though the need for grace is understandable in some mill operations, at the very least the tubing should come at least OD deburred on a buffer. This is a step that should be expected from customers. Many will argue that it is an unnecessary step that adds cost, but it is a service and benefit to the customer, even if they are going to process it anyway. It gives them a good, clean starting point to work from and allows tubing to be flush next to each other when such alignments are required for certain operations. Finally, the tubing should be packaged in a way that it is protected and can be well organized and identified. Some smaller sizes require shipping in a stiff poly tube, but we typically ship all our tubing this way for protection. Some of the larger sizes can be shipped in poly sleeves, but should be bundled in a way that the tubing is protected, and the bundle is rigid enough to prevent bending.

Naturally, we think our way of supplying it is the best way, especially after years of listening to what our customers appreciate. But, even though we believe this is the standard of what customers ought to expect from their supplier, there is always room to be better. So, if you have seen something done that made an impression or makes sense that we haven’t thought of when it comes to supplying hypodermic tubing, please don’t hesitate to let us know.

The mission of Component Supply is to be a resource for researchers and product designers by connecting them with the components and knowledge they need to change the world.


Bending Hypodermic Tubing

headshot1bwLet’s face it, bending a thin, little, hollow tube that’s smaller than a 1/16” diameter takes virtually no effort at all. The rub comes when you still want to be able to pass a gas or a liquid through that tube after it is bent.

Here’s the problem: Even though stainless steel hypodermic tubing is a full hard tube when you get down into the very small ODs like 0.013”- .032,” the tubes do not have enough tensile strength to remain at the radius they are formed. They spring back and you wind up having to bend them at a much smaller radius than your finished radius, thereby compounding your problems.

So, to start mitigating this problem, you need to address these three questions. How big? How steep? How long?


How big (or small) is the OD and ID of the tube I need to bend? Generally speaking, the larger the diameter, the easier the tube is to bend. However, the thinner the wall, the more likely the tube wall is to collapse while being bent.

How steep of an angle do I need to bend? Obviously the greater the angle of bend, the more difficulty you will have in maintaining the wall integrity. We recently did a job for a customer who needed a 135° bend (in essence a V shape.) In this job, the issue was not how to maintain the tube’s ID, but how to minimize and control the collapse of the tube walls during the bending process.

How long can the radius be? The compression/tension forces on the tube walls are exponentially reduced as the radius increases. So your success rate will significantly increase as the radius increases.

So, before you design your next project incorporating some little innocuous bent hypodermic tubing consider these three very inter-related issues, and if there’s anything we can do to assist your process, please contact us:

My Desk At Component Supply

_MG_0533_bwOther than a muddled mess of notebooks, multi-colored dry-erase markers and any remnants from my colleagues’ latest donut purchase, only two items have made my desk their permanent home: two pieces of welded hypodermic tubing. They weren’t left carelessly by the custom fab shop, and they don’t serve any practical function in my workspace. No, those pieces of metal are the souvenirs from my first day of work at Component Supply.

When I rode down to work for the first time, I had no idea what I was getting into here. However, the people were friendly and the work was intriguing, so I was willing to get my feet wet. Only there was no “getting my feet wet” at Component Supply. When I first walked into the shop, Mark handed me a pair of safety glasses, and Jeff sat me down at a welding machine with some hypodermic tubing and taught me how to weld two pieces of metal together. I’m sure I did all sorts of wrong to that poor welding machine. I don’t have Jeff’s gentle touch with machinery. Nevertheless, I welded that tubing. It wasn’t pretty, but it was my work and I was proud of it. Jeff then went on to do what I did, only much better and in much less time. I looked at the two pieces together and there was no doubt about the creator of each piece. I made some self-deprecating comment about how hopeless my welding job was compared to Jeff’s. Then Mark grabbed the result of my shoddy craftsmanship from my hands and took it over to some other machines. A couple minutes later, he brought back my welding project all smooth, shiny and polished. You can still see a difference between my work and Jeff’s, but the discrepancy seems much less obvious than it did at first.

Now I keep both pieces of hypodermic tubing on my desk to remind me of two things. First, it’s ok to take a risk and try something new. I didn’t know much about the processes of our shop when I stepped into it the first time. But, Jeff and Mark, without hesitation, let me try my hand at those processes anyway, reminding me it was ok to fail as long as I kept trying. Second, at Component Supply our team can take your original idea and make it even better. It’s just how we operate. Sometimes you create a plan and try to execute it, but your idea just doesn’t manifest itself the way you had hoped. Our team at Component Supply can take your idea, even one you thought was hopeless, and return it to you, smooth, shiny and polished. We see the potential in our researchers and product designers, and if there’s any way we can make your idea even better, we work with you to make it happen.

Supplying Hypodermic Tubing – Component Supply Style

By Mark Maffett
Looking at our product offering it is easy to see we are “heavy” in the area of tubing and fluid handling components. Within the world of tubing products we supply a lot of hypodermic tubing. I wanted to put together the reasons why this is the case because some of them may help buyers and users make good purchasing decisions, and at the same time I get to brag a little about what we have done here at Component Supply Company.

We have work very hard to offer the largest selection available of hypodermic tubing in stock with no minimum order quantity. On top of that, we can issue a material certificate for our tubing, even one 30 inch length, and ship it out the same day. This makes us unique from all other suppliers of hypodermic tubing. There are places you can purchase very small quantities; but not many and they are typically expensive, and I am not familiar with any that will, or can, provide a material certificate with chemical composition. Material certificates are not uncommon for certain suppliers, however. There are usually just large quantity requirements for purchase and shipping an order out the same day is not common for these companies. This is what makes us different from other suppliers on both the small quantity and production quantity side. If I had to sum it up, it would be that we provide material certs. for customers needing small quantities and we can ship production quantity orders the same day.

Our tag line is “The R&D Hardware Store”. We believe this is true, but it is a little deceiving. It is true in the sense that we do supply small quantities to researchers and product developers. However, it implies that is all we supply. In actuality, we supply large quantity hypodermic tubing orders at very competitive prices to hundreds of companies. We also custom fabricate parts by precision cutting, beveling and bending hypodermic tubing as well as produce custom needles. We handle this material so much on a daily basis that we have been able to listen to our customers to find out what is important and develop efficiencies so we can meet the expectations of both the R&D and production user of hypodermic tubes.

Whether you decide to use Component Supply as your hypodermic tubing supplier or not, keep these things in mind. If you need a small quantity and a material certificate, make sure the supplier is able to provide one and understands the difference between a material certificate and a certificate of conformance. If you are purchasing larger volumes find out what the turnaround time would be for the quantity you are looking for. All in all, most of the companies that supply hypodermic tubing are good companies. We are obviously proud of the services we can offer and the unique role Component Supply plays but, as you look around, you will find good quality and good service throughout this industry. That being said, we hope you still choose us.

Material certifications and test reports

Please remember that material certs and test reports are not avaiable for all items. Whenever you order material, regardless of who the supplier is, it is always good to request a material cert up front. Here at Component Supply, we do not always record our lot number when we pick an item for an order. This is something we try and do, but sometimes we wind up with “mixed” lot material from jobs. When we fill small quantity orders we may choose this material if the customer has not specified they require a material cert. So if that customer needs a cert after the fact, we would not be able to issue one. This is one scenario, but as a rule, you are always better to request the certs and other documentiation up front.



A Variety of Industries Use Hypodermic Tubing in Different Ways

Hypodermic tubing can be used in a variety of different ways to satisfy the requirements for pharmaceutical, medical device and industrial applications. One of the more common uses is to cut the tubing to the desired length, attach it to polypropylene luer hubs and turn it into blunt needle assemblies. Dispensing needles are used to ensure the accurate delivery of various fluids and liquids in the desired amounts. Many of the common gauge sizes in standard lengths are made available in lab assortment kits for organizations using a variety of different types.

Another use for hypodermic tubing is to use it along with straightened wire to create guide wire assemblies. For organizations requiring guide wire assemblies, you are able to obtain all of the tubing and straightened wire you require, and build them yourself, or take advantage of our customization services and let us build as many assemblies as you need. Just remember, if you are building your own assemblies, you will need the right tools to cut and deburr the tubing and straightened wire.

Additionally, some organizations have a demand for small cut lengths of this kind of tubing for certain manufacturing processes. Instead of having to cut the tubing yourself, or use secondary finishing and customization services, we offer a stock of one, two and three inch lengths, already cut, deburred and cleaned. Further, should you require one or two inch lengths with a 90 degree bend, you are able to find these sizes in stock and available for shipping. For other customizations, all you have to do is let us know your specifications, and we will work with you to deliver the tubing you require.


How to Calculate the Wall Thickness Measurement of Hypodermic Tubing

You are able to determine the measurement of the wall thickness of hypodermic tubing by taking the outside diameter and subtracting it from the inside diameter. For example, if you have a piece of 10 gauge regular wall tubing with an outside diameter of 0.133 inches, and an inside diameter of 0.104 inches, the actual wall thickness of the tubing would be 0.029 inches. You can also use this calculation to determine the variances between wall thicknesses when evaluating both regular wall and thin wall tubing. A piece of 10 gauge thin wall tubing, with an outside diameter of 0.133 inches and an inside diameter of 0.112 inches, has a wall thickness of 0.021inches. So, it is easy to see the thin wall tubing has a wall thickness 0.008 inches thinner than regular wall 10 gauge tubing.

Keep Hypodermic Tubing Clean and Organized by Storing It in Plastic Containers

In order to keep your hypodermic tubing clean, it is important to store it in the proper manner. One method is to place the tubing inside clear plastic containers with a lid, as this helps prevent dust, dirt and debris from getting on and in the tubing. Further, keeping your tubing in plastic storage containers makes it easier to sort it by gauge size, wall size and length. On the outside of each container, you can place a label containing this information which enables you to keep all of your tubing well organized. You are also able to have better inventory control over the various sizes of tubing you use and ensure you always have stock on hand and available for your applications.

Items to Consider When Ordering Hypodermic Tubing

When selecting hypodermic tubing for your applications, you need to determine the gauge and wall size you require, as well as the overall length. Gauge sizes are easy to get confused, because you might assume, as they got larger, so would the diameters on the tubing. However, this is a common mistake many people make, as this is not the case. Instead, as the gauge sizes increase, the diameters actually decrease. In order to avoid making this error, it is better to determine the diameter required, and then use that measurement to determine the appropriate gauge size.

The wall size is another factor that has a direct effect on the inner diameters of hypodermic tubing. As the wall becomes thinner, the inner diameters increase. It is possible to find inner diameters which are relatively close to one another, but that have different wall sizes and gauge sizes. For instance, 11 gauge thin-wall tubing has an inner diameter of approximately 0.098 inches, while 12 gauge extra-thin-wall tubing has an inner diameter of approximately 0.099 inches. Either one of these may be suitable for your desired applications, but it is worth your time to obtain a small sample of each one and conduct some tests to determine how each one performs. The final thing you need to determine is the length of the tubing. Tubing is offered in standard lengths of 30 and 60 inches, and can be custom cut to your exact specifications using our secondary finishing processes.