Can anyone out there tell me where I could purchase a SQUARE SECTION round oil seal which fits into the speedo bush of my Super Rocket? Thank You. Malcolm.
Do you mean the fibre washer 65-3392:
https://www.draganfly.co.uk/index.php/accessories-a-misc/product/12727-
I use a normal O ring of appropriate size, easier to source and does not leak.
If you want a 65 3395 square one try here, Triumph part 57 0948 but apparently the same dimensions;
https://www.ebay.co.uk/itm/TRIUMPH-PRE-UNIT-SPEEDO-DRIVE-SHAFT-SQUARE-SECTION-O-RING-IN-GEARBOX-57-0948/262310003777?hash=item3d12e