I haven’t purchased black rubber cord or tubing from Rio, though I
have purchased a lot of it from Rings & Things. Their rubber cord is
made in Germany. When I first got it I put it through it’s paces - I
secured the end of a piece in a vice and checked how far I could
stretch it before it snapped; I soaked a piece of it (that had been
tightly coiled and had gotten “bent” in boiling water and watched in
relax and become straight again. I’ve used it over memory wire and
softflex with no problem - some I’ve had for at least 2 years and
worn it myself-and no deterioration has taken place.
I tried several super glues with it to find which held the best. Rio
does have a wonderful adhesive, called Rio JetSet Adhesive which is
used with rubber cording and tubing. This superglue never gets
brittle and is incredible. BUT it does have a very short life, so
don’t buy more than a bottle of it at a time. I currently own two
bottles both of which have solidified (but aren’t hard, just
compressible solid) and they are slightly under 2 years old. I
believe their shelf life is 1 year. I just purchased more than I
I would call Rio and go through their tech department and find out
what experience others may have had or they may know of and see what
they have to say. Rio is generally very willing to work with you -
I’d ask who their manufacturer is and if you could go directly to
the manufacturer with your problem. Sometimes they are helpful. I do
know that rubber cord which lies in hot sun for a long period will
shrink somewhat but just general usage should not cause any problem.
We all know it won’t last forever, and yet such neoprene tubing is
used in lots of machines - obviously made somewhat differently, but
doubt it is all that different.
Sorry to hear of your problems and hope you find a solution to them.