Source for correct washer for overdrive drain plug

[bighealeysource]

Hey all,
The replacement gasket available from Moss and others for the large overdrive drain plug - brass one - does not fit well. Since it has to get past the threads of the plug, has to be a bit oversized so as a result slides around once in place past the threads and in my opinion, makes it prone to leaking. Anyone know of a better one available out there or has anyone tried a large rubber O ring or something that might snug up nicely. I've tried hylomar gasket maker resistant to gas and oil but that didn't work.
Thanks
Mike

 

[PHulst]

I like the o-ring idea. Just wondering if that might allow for a better seal, and stay tight to the plug. There is enough room between the end of the threads and the head of the plug that it appears feasible.

 

[blueskies]

How about using the replacement gasket along with a couple of layers of teflon tape on the threads? An O ring may be worth a try, but I haven't had great luck using O rings on leaky oil pan plugs.

 

[Deleted member 19315]

Hi, tape is a botch job in my view, the design is not right for an o ring. In order for that to work either the plug or case needs modifying to stop an o ring extruding as the plug is tightened. I would consider using an appropriately sized one of these as a better solution. https://www.birminghamseals.co.uk/index.php?website=www.birminghamseals.co.uk&webpage=dowtywashers. It is also worth having the land surface on the plug kissed flat and true in a lathe before refitting.

 

[PHulst]

How about using the replacement gasket along with a couple of layers of teflon tape on the threads? An O ring may be worth a try, but I haven't had great luck using O rings on leaky oil pan plugs.

On mine I've used ARP thread sealant. No strings of tape to get sucked into anything, and I find it works better.

https://www.summitracing.com/parts/arp-100-9904

 

[bighealeysource]

Hey all,
Thanks for the feedback. Haasad the dowty washer looks like exactly what is needed if I can get one that will fit over the threads of the brass plug if the rubber gives enough when pushed down on the plug. Going to see if I can find a source over here.
Thanks
Mike

 

[Deleted member 19315]

A hydraulic hose or fitting supplier maybe for heavy plant would be where I would look.
Hope it helps