Pyrathane vs. Petroleum Products: How Does It React to Creosote?

[Averagesupernova]

Does anyone here know how Pyrathane stands up to petroleum products? Specifically, how does it react to creosote? Will creosote eventually break it down?

 

[FredGarvin]

After doing a quick search, I didn't see any kind of a chemical compatability listing anywhere. You'll probably have to give the manufacturer a call.

 

[Q_Goest]

I have "Chemical Resistance Guide for Elastomers II" on my desk, and it says polyurethane (which I'm assuming is very close to Pyrathane) will be attacked to some degree by creosote and shouldn't be used. The book recommends Nitrile, Fluorocarbon, and Fluorosilicone.

 

[Averagesupernova]

Thanks Q. I'm getting some conflicting stories from other sources. If anyone else has any information on this feel free to come forward. As far as I can tell, pyrathane is a trade name for polyurethane or something very close to it manufactured by the company Pyramid. I have not heard back directly from Pyramid yet.

 

[Q_Goest]

I have another reference, this one from "Minor Rubber Company". They rate it as "minor to moderate effect" and they also recommend Fluorosilicone. They rate nitrile as minor to moderate effect also.

 

[Averagesupernova]

Ok thanks again Q. Still waiting to hear from Pyramid. I did some searching last night on-line and came up with the same results as Fred.

 

[FredGarvin]

We use fluorosilicone for our standard applications around jet fuels.

 

[Averagesupernova]

Ok Fred. Thanks. Creosote is a coal or wood product so I'm not sure how similar it would be with what is basically kerosene.

 

[FredGarvin]

I always thought that creosote could be a by product of combustion. I must be thinking of something else...

 

[Averagesupernova]

Creosote IS found in chimneys specifically where wood is burned. Do a little more googling and you'll find out how.