Quote:
Originally Posted by prairie tuber
DO NOT USE ARMORALL ON HYPALON (OR PVC) !!!  
Armorall contains silicone which degrades hypalon tubes.
Use something appropriate for hypalon such as 303 Aerospace Protectant.
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Silicone oil seems fine for Hypalon
http://www.robinsonrubber.com/pdfs/HypalonRubber.pdf
In fact silicone is used extensively in the rubber and plastic moulding business as a mould release agent.
I have used both Armourall and 303 - there seems to be no difference to me except price.
I have a very old inflatable dinghy(circa1970) which is made from hypalon and doesn't seem to have suffered from having armourall sprayed all over it!!!
I bought a gallon of 303 at a silly price - yes it makes the RIB look nice but you have to apply it at least once a month - usually more often. I am going to use the floor sealer next!!!
I suspect 303 are great at putting out scare stories to make their product "essential".................