[Coviper]

I've just finished the cabin plumbing for the fuel and brake lines. These 4 AN Spacers (washers) came is the bag with all of the AN tube fittings. Are these used with the fittings at the exit point of the fuselage (ie, the 2 brake lines and the 2 vent line egress fittings)? What have other builders used these for? (The lighter is for scale)

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[pierre smith]

Yes....

.......under the nut on the outside,

Regards,

 

[Jim Percy]

I used them for the fuel tank vent lines, two per side, one inside and one outside the fuselage skin. I think I've read of others using both on the inside to make it easier to clear the longeron with the vent tube- less bend required. The main fuel lines use only rubber grommets.