Rubber material
Rubber material
(OP)
I have been tasked to find a suitable rubber to replace "DTD 625" on aircraft fuel tank sealing washers. Any recommandations regarding working temp, cost, life span etc would be extremly helpful.
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RE: Rubber material
What kind of polymer? Nitrile? Butyl?, etc.
RE: Rubber material
Isoprene
Chloroprene(neoprene)
Butyl
From the list if any one knows the most suitable and why you would recommend that one I would be most grateful.
RE: Rubber material
Other polymers (NBR, HNBR, urethane, for example) would have good/very good fuel resistance but not the excellent heat resistance of fluorosilicone. The best polymer/rubber would depend on all the requirements considered together. I'd think there would be a detailed specification for any materials used in aircraft.
FYI, there is a "rubber engineering" forum (http://eng-tips.com/threadminder.cfm?pid=335) that may be a good place to post this inquiry, preferably with some specifics regarding specification/property requirements.
Hope this helps,
tom