Part number for Fuel Cap O-ring?

[Ed_Wischmeyer]

Looking to replace an O-ring that doesn't quite seal, and I get a mess on the top of the wing.

I have a tech sheet that says the O-ring is a "2-235 VITON-75"

On amazon, the closest I can find is M2x35 Viton O-Ring, 75A Durometer, Round, Black, Viton, 35 mm ID, 39 mm OD, 2 mm Width, for $13. Not knowing any better, that seems like a lot for an O-ring.

Amazon had a link to Mr O-Ring, but that web site found nothing.

Comments? Suggestions? Sources?

Thanks!

 

[Steve Watkins]

-325

The oring for the standard cap on the RV-8 is a dash 325. I got these from Mcmastercarr.
https://www.mcmaster.com/5267T362/
Steve

 

[Ed_Wischmeyer]

Thanks! They'll arrive tomorrow.

Ed

 

[RV8JD]

Don't forget the small O-ring around the stem. Lubricate both O-rings and properly adjust the cap.


Usher Fuel Caps:

Adjustment instructions and parts shown below. Instead of fuel lube/EZ Turn for lubrication many folks use Krytox GPL 205 grease with good results. Expensive, but the small 0.5 ounce tube will last a long time.

Parts are available from Van's:

https://store.vansaircraft.com/catalogsearch/result/?q=fuel+cap+parts+t-406a​