I have noticed that LEGO rubber bands (along with just about everything else LEGO) are fantastically durable. They last ages without getting crusty and dying like most commonly available rubber bands. They can even be held in stretched positions for extended lengths of time without showing any signs of wear, or even any noticeable hysteresis.
So anyhow, what are they made of to make them so superior to common rubber bands?
- By "standard"/"common" rubber bands I mean those which are commonly available to purchase at the store, like these.
- I am talking about the newer "round cross section" type, not the old "square cross section" type which are more similar to standard rubber bands. Part #'s x1106, x90, x89, x37, and x71.