Crank help

[Madhibee]

I’ve just took my crank apart as it started to wobble ive found that it’s one of my Thompson 40mm seal that has burst and needs replaced but the problem is I can’t find it anywhere my crank is around 15 years old and still works great so would really like to keep it pictures below help if you can please thanks

 

[Ajax Bay]

Are there any markings on the sealed unit?
Is the bottom bracket shell threaded or presfit?
The cranks look as if they would fit a square taper BB (but suspect pressfit).
What is the width of the BB shell (ie from left to right)? 68mm? 73mm?
How long is the spindle?

Thompson/Thun	30, 33, 35, 40, 45 mm pressed	left (cone and locknut)	right (cone and locknut)	65, 68,70 mm	2-piece or 3-piece crank. Cup and cone bearings. No shoulder inside shell; loose tolerances.

 

[Madhibee]

Looks pressfit to me as for the size I’m not sure will measure in the morning the markings are shown below in photo I could just buy a new crank but I’ve had this one so long don’t want to get rid

 

[Madhibee]

B133 Slovakia Kinex yf 127 jls is what’s printed on

 

[Ajax Bay]

Need the internal measurement of the BB shell. A 40mm pressfit with square taper is unusual and you may need to find 'retro' enthusiasts to help, I suspect. There is a Vintage-classic-bikes sub-forum on CycleChat and there's also 'Retrobike'.
What about this:
https://hollandbikeshop.com/en-gb/b...acket-cotterless-127-40mm-thompson-press-fit/
or this:
https://www.ebay.co.uk/itm/Thun-Bot...-Press-in-operation-German-Goods/332297868617
Check the length of your spindle.
The latter is described as having SKF bearings, which have a good reputation.