Hanna Rubber supplies 36″ wide rolls 1/32″ –2″ thick (30-80 durometer).
Butyl rubber is impermeable to most common gasses and has good resistance to sunlight and ozone. Butyl is normally satisfactory when exposed to animal and vegetable oils and oxidizing chemicals.
Butyl is not recommended for use with petroleum solvent, coal tar and aromatic hydrocarbons.