Acetone in gas?
10-08-2005, 08:16 AM
#21
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Ok, the 4 most popular elastomer materials for Orings are Nitrile-Buna, Viton, EPDM, and Neoprene.
Gasoline is a no-no for EPDM and Neoprene so that leaves Viton and Nitrile-Buna. Viton is about 5x the cost of Nitrile-Buna so I would suspect that most Orings and such in a car are Nitrile-Buna.
Toluene and Acetone both attack Nitrile-Buna and Viton so, really neither is safe for use around these elastomers. Attacks can vary from dissolving the elastomer to swelling it or causing it to harden and crack. In any case, bad news.
I have to deal with various elastomers and their compatibility to numerous chemicals every day. bo-ring [img]graemlins/boring.gif[/img]
Of course a capful in a 40l tank of gas isn't really a high concentration but why even mess with it?
Gasoline is a no-no for EPDM and Neoprene so that leaves Viton and Nitrile-Buna. Viton is about 5x the cost of Nitrile-Buna so I would suspect that most Orings and such in a car are Nitrile-Buna.
Toluene and Acetone both attack Nitrile-Buna and Viton so, really neither is safe for use around these elastomers. Attacks can vary from dissolving the elastomer to swelling it or causing it to harden and crack. In any case, bad news.
I have to deal with various elastomers and their compatibility to numerous chemicals every day. bo-ring [img]graemlins/boring.gif[/img]
Of course a capful in a 40l tank of gas isn't really a high concentration but why even mess with it?
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