Trying to find a new oil seal for the clutch push rod.In my 1973 rt 360 engine. Size is 6.8 hole x26 od x6 wide.What do other folk use and where can I get some. Prefer UK. Thaks  Alan.

What I do for all my bikes is go to my favorite website that shows the exploded view of your bike and write down the part number. Then go to your favorite parts place (I use EBay for everything ) and search for that part number. Get the Yamaha part not the cheapest one you can find. Simple. I do this on a regular basis with great success. Seals should be readily available...even just visit your local Yamaha dealer and they should still be able to get them. EBay hasn't let me down and don't have to leave my nice warm house:)

I have some NOS ones here in the US if you can't find what you need.

That seal can be difficult to find in the parts lists...  hint:  look in the "transmission" section.

Often a good bearing supply house can source seals by the part size...  if that fails, then there are a lot of them for sale on ebay... some with free shipping to UK.

If buying one from DEET (or anywhere else in the US, for that matter), go through your bike to see if there is anything else that you need, but can't get here in the UK - you can then see if DEET etc has that as well and hopefully cut down on postage.

Don't ask me why I'm recommending this......!!  

Could get a ring machines to fit in there to bring it down to a common seal OD with the 6mm ID. On one of my 360's inserts were fitted in both cases for the crank seals so common sizes as for the DT250-360A could be used.