Recent content by sugarandfat

Another option I thought of is a double layer; nitrile rubber from a non-latex rubber glove for its resistance to ethanol and temperature, backed by a layer of innertube rubber for its sponginess, so as to give a decent seal.

Yup. That does seem the way forward. Pretty easy to get hold of.

Thanks for the good info. Ok, once and for all, how corrosive is ethanol to natural rubber and butyl? Looking into it I've read so much conflicting information, some say it's practically instant death, others that there's a bit of damage over time but not really to worry about it. I've used...

Hi all. I'm prototyping an open source solar energy device, which can be made from scrap and recycled parts. It mainly works off the boiling of ethanol to provide motion for the tracker. As a result I need to seal the system. I've been using bike inner-tube rubber which I understand is almost...