----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
Paul, Most O-ring are made from Nitrile rubber. Nitrile is excellent against high aniline lubricating oils. It is fair against low aniline lubricating oils and gasoline. Its heat resistance ranges from 240° for intermittent contact and 210° for continuous contact. Its resistance against other chemicals, such as naptha, kerosene, benzene, toluene, is fair to good. Another O-ring material is Viton. Viton is excellent against gasolie, both low & high aniline lubricating oils and good to excellent against the other chemicals listed above. It is also very good for high temps. Its range is from 500° intermittent to 450° continuous. Its downfall is that it's quite expensive. But hey, that's what flying is all about. Right? If you're really bored and want to learn more about the different base rubber polymers and their properties go to our company's (Lavelle Ind., Inc.) web page at: http://169.207.189.15/ Click on materials, page down to the technical guide and choose rubber from the menu. Mike Dean -----Original Message----- Has anyone replaced the O rings in a Lunkheimer primer recently? Can you remember the size? Mine has started seeping a bit and I am loath to take it apart in case the O rings are really swollen and I can't get it back together again. What material would best resist auto gas? I called Lee at Skyport and he couldn't help me. Since Lunkheimer is out of business I obviously can't call them. <G> Thanks Paul N2273H __________________________________________________ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] ____________________________________________________________ T O P I C A -- Learn More. Surf Less. Newsletters, Tips and Discussions on Topics You Choose. http://www.topica.com/partner/tag01 __________________________________________________ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] ____________________________________________________________ T O P I C A -- Learn More. Surf Less. Newsletters, Tips and Discussions on Topics You Choose. http://www.topica.com/partner/tag01
<<attachment: winmail.dat>>
