Order Online! We offer the lowest internet price!
We will match any vendor's price! Minimum 5 lb order required.

Also see our rubber band websites Postal Rubber Bands and USA Rubber Bands

Frequently Asked Questions

Question #1 – What gives a Rubber Band the ability to Stretch?

Most rubber bands are made from latex tapped from rubber trees. This latex is a naturally occurring polymer, a long chain of identical molecules which can curl and intertwine when pressure is applied, giving it the ability to stretch.

The vulcanization process invented in the 1830's allows the rubber band to stay in a set pattern by curing the rubber. This allows the both for the rubber to stay in a set shape, and still retain much of its elasticity.

Question #2 – How far can rubber bands stretch and how far can they be safely stretched?

How far a rubber band can be stretched depends on the width and thickness of the band. It also depends on quality of the band, on if the band is composed of 70, 80, or 90% rubber.

Rubber is the key factor. A band which is 90% rubber will stretch significantly further than a band made of 80% rubber, and is also lighter. However, many companies create bands which have a lower rubber composition, since it's cheaper to add filler. The thicker and wider a band is, the more force it takes to stretch it.

A rubber band will generally stretch at a uniform rate until it reaches something called plasticity, a place where the polymer is stretched to its limit. At this point, it still has a bit of give left, but will require much more force to stretch. It's in this state of plasticity that the rubber band is at risk of breaking. Our customers have often found that they can use smaller rubber bands (and reduce their cost) when they switch to our high quality rubber band products.

Question #3 - What is tensile strength and what effect does a band's Thickness and Width have on its ability to Elongate?

Tensile strength relates to the following formula: σ=F/A. We can rearrange the formula as A*σ=F

Omega represents the stress an object can take, F is the force exerted, and A is the Area.

In this case, the stress is determined largely by how strong a rubber band is (its rubber content, and thickness). Increasing the width is also an effective way to stress the rubber band less, as the force is distributed over a larger area. We are experts in the field of rubber bands, and are happy to help you find the proper band to suit your needs.

Question #4 - How do you select samples and conduct tests to find the correct size for your need?

I've personally been to factories ranging from machinist shops to window blind manufacturing, and have helped clients find the rubber bands to suit their needs. When you describe how you use your rubber bands, I can often tell you what rubber band will best suite your purposes.

Another solution is to experiment. We're happy to provide you with a variety of rubber bands to find what works best for you.

Question #5 - What are the Safety Concerns of using oversized rubber bands?

The primary concern is from using a band which is stretched to the plasticity phase, and is at risk of breaking. Not only does this create a mess and slow down your production lines, it also creates a dangerous situation to your employees. A second risk is in using low grade rubber bands, which deteriorate in quality and age prematurely.

Depending on how you use your rubber bands and the temperatures they're exposed to, these problems can generally be solved using a stronger rubber band or a band of higher quality, which can take more weight and temperature stress.

A second risk occurs when you use a rubber band which is too big. Allowing your employees to experiment with various sizes of rubber bands not only creates a safer environment for them, but often also leads to increased productivity.

Safety Recommendations/Warnings: Large Rubber Bands can require significant force to elongate (or stretch). As a result, when stretched to high levels of tension they present a significant danger, to humans, especially to hands, face, and eyes.

For this reason, during your testing or if later applications require bands be stretched to high levels of tension, safety glasses and gloves should be worn by all persons using or in the vicinity of where the bands are elongated.