Fuel Cap O-Rings

[Capflyer]

My RV4 has the older fuel caps with the black o-rings and they need replacing. I asked builder support at vans and was surprised that they could not tell me what size they are so I could order them from another source since they don't carry them. Surprised to find out that they do not know!

I guess I could remove the existing ones and measure them but hoping that one of you has the size handy.

 

[GAHco]

We have the Good Ones!

My RV4 has the older fuel caps with the black o-rings and they need replacing. I asked builder support at vans and was surprised that they could not tell me what size they are so I could order them from another source since they don't carry them. Surprised to find out that they do not know!

I guess I could remove the existing ones and measure them but hoping that one of you has the size handy.

At Jim Ayres (Less Drag) request GAHco put the M25988/3-225 Blue Rubber Fuel Resistant O-rings into Inventory. He needed them for the Rocket he is building. I assume that they are the same fuel caps.

Here is the purchase link http://www.gen-aircraft-hardware.com/store.asp?alternate=M25988%2F3%2D225

I hope this helps, have a great Holler Day!

 

[airguy]

What about non-rubber material, for E10 mogas?

 

[GAHco]

Spec #

If you know the ASTM spec for the current auto fuel, I can do some research!