where to get kickstart oil seal / rubber seal for '78 CR250

As title really......
it's not a standard oil seal but a rubber type packing seal. I tried the usual suppliers...Andy Elliott and Charlie Preston but no luck.

The part number is 12.25.442.01 and this seal fits lots of Husky engines.....is there an equivalent size of seal I could use?

I have seen one for sale on eBay usa...but £15 for a tap washer sized seal does seem a bit expensive............

Try a bearing house and if you can bring in the seal you want , they can cross reference for you

Here:

http://www.husqvarna-parts.com/catalog/item/3736875/5756797.htm

thankyou........