What size viton o-ring for Scepter fuel can spouts?

[Awesomeness]

The big Viton o-ring inside the cap of my Scepter military fuel can spouts are cracked and leak. Does anyone know what size o-ring to buy? Thanks!

These (picture from internet):

 

[SCSG-G4]

The outer diameter of the part that it fits on is 55mm, and since you have a broken one, you should be able to measure the diameter of the ring itself. With those two numbers, you should be able to go to Grainger or McMaster-Carr and find an O-ring that would fit. That is what I would do.

 

[Awesomeness]

The outer diameter of the part that it fits on is 55mm, and since you have a broken one, you should be able to measure the diameter of the ring itself. With those two numbers, you should be able to go to Grainger or McMaster-Carr and find an O-ring that would fit. That is what I would do.

I hoping that with the prevalence of the these gas cans, someone actually already knows the answer. If not, then yes, the guesswork will begin.

 

[Godspeed131]

I’m not sure about the size but I wound up just buying mine from a guy down west of you in brooksville that sells pretty much any thing for the cans. I had ordered the Viton O rings and replacement cap flanges and seals from him. the orings were 3.95 a piece. The website was jagtmte.com. If I can remember I’ll measure a extra I have when I get home.

 

[SCSG-G4]

I have purchased a number of items from jagmte.com and have been pleased with the quality. If you go to his site you will see his 'name' stands for "Just A Guy Making Things Easier".

 

[Godspeed131]

Here’s what I came up with.

 

[Awesomeness]

Here’s what I came up with.

Based on the measurements above (0.210" cross section, ~2.00" ID), and according to these charts...

https://www.allorings.com/userAssets/file/USAStandardSizes02.pdf

https://www.allorings.com/userAssets/file/B1000CommonMetricSizes02.pdf

... it looks like it's one of these close options:

• USA Standard - #329: 0.210" cross section, 1.975" ID
• USA Standard - #330: 0.210" cross section, 2.100" ID
• Metric Common - 5.3x50: 5.3mm (0.209") cross section, 50mm (1.969") ID

Scepter is a Canadian company. It doesn't look like Canada is a fully metric country ( https://en.wikipedia.org/wiki/Metrication_in_Canada ). Any guesses?

 

[Godspeed131]

Well with what SCSG-G4 said about the diameter of the spout being 55mm which crosses over to a 2.165. I’d say any of the three you had already shown would work. The difference in my opinion would be negligible. Biggest thing is not to get one with too small of a inner diameter, sure it’ll fit tight but it’ll stretch the o-ring and reduce its cross section and reduce the sealing capabilities.