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| Petrol-proof O-rings |
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| awemawson:
Beware of Viton rings near heat - iirc they break down and produce phosgene gas :bugeye: |
| Manxmodder:
--- Quote from: Bluechip on November 26, 2014, 07:39:09 AM ---AFAIK 'Viton' rings are proof against petrol. No idea what lighter fuel is so .... ?? I get mine from Simply Bearings. Here is their site and if you poke the 'info' [ Chemical Resistance Table ] thing you'll get an overview of various o-ring materials. http://simplybearings.co.uk/shop/index.php?cPath=4501_4706 Dave --- End quote --- Lighter fluid is usually naphtha,a high volatile fuel also known as white gas. http://en.wikipedia.org/wiki/Lighter_fluid |
| dawesy:
Nitrile or fluorosilicone should be fine also. |
| Manxmodder:
--- Quote from: awemawson on November 26, 2014, 08:21:40 AM ---Beware of Viton rings near heat - iirc they break down and produce phosgene gas :bugeye: --- End quote --- Never heard of them emitting phosgene gas but the danger we were taught relates to the constituents of the viton fluoroelastomer being converted to hydrofluoric acid if the seal or O ring is heated above 300 degrees celsius(that's very hot). The standard advice when handling viton O rings that have been used in extreme high temp applications is to wear disposable gloves,or use a tool such as tweezers. I found this health and safety document which seems to say a lot of the fears are overstated http://www.hse.gov.uk/mvr/topics/fluoroelastomers.htm .....OZ. |
| Lew_Merrick_PE:
Lighter fluid is naptha. EPDM o-rings should do just fine for you. That is the preferred solution for jet fuel (kerosene) and a number of other evil nasties. Nitrile should also work well, it just may need to be replaced more often. |
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