TO MF 35 Diesel Gas Cap?

[NoPaint]

I cannot seem to find a gas cap that fits nice and tight on my tractor. There seems to be 3 different caps spec'd in the parts book. Does anyone know which part number will fit tight and leak free? The one I got recently is super loose. The one that came on the tractor was also really loose.

EDIT: in the link below the part specified looks to grab onto an outside lip. My tank has two cut outs for an inside holder.

Part Number 1876534M1 Enlarged View - Yesterday's Tractor Co.

 

[Cougsfan]

That cap you show looks nothing like my TO35 fuel cap. Mine has an inner holder as opposed to what that part shows. Mine is much more similar to this: NEW Fuel Cap for Massey Ferguson Tractor 65 85 88 TE2 TEA2 TO2 TO3 TO35 | eBay, except my inner dome is bigger. I am pretty sure this ebay cap would fit mine. Mine was loose too until I made a new gasket for it out of neoprene.

 

[NoPaint]

Thats one of the caps I bought. It seems like mine would be tighter if it had 2 gaskets. Is that what your neoprene gasket accomplished?

 

[Cougsfan]

Thats one of the caps I bought. It seems like mine would be tighter if it had 2 gaskets. Is that what your neoprene gasket accomplished?

Yes. I made the gasket years ago when I was still working and had access to a variety of gasket materials and a circular gasket cutter. One could be made by hand pretty easily. I'd be guessing, but I think I used like 3/16" thick material. You could probably make one out of 1/16" and put it over the top, or better yet, under of the existing gasket. I also had a TO30 at the time and it had the same problem, so I made two.

 

[NoPaint]

Thanks will do!