Ninjaflex seems to be very fuel resistant like it says… Even with 5% Ethanol 
Had it in there for 3 days now…
What are you using it for which requires such attributes?
@Greg_Copeland iam using it as a gasket for a fuelinjection on my car.
Wow. That’s bold!
Small particulate can cause a real frustrating day. Thanks for sharing. Please continue to update us. Very interesting.
Hang on, this stuff can handle long term exposure to elevated temperatures and petroleum products?
@Dale_Dunn well wont use it directly on the engine but so far it had nice applicantions
We’ve used it to make fuel sender gaskets, they’ve been in service for over a year with no signs of deterioration.
@American_3D_Printing thanks for the info!