I once was doing a regular check up on my TRF dampers.
I left a seal at one corner of the table for about 5 seconds.
When I turned back, my dog was looking at me with a very innocent face. Guess where it went. =P
It might be a bit hard to find an oil seal like that.
You'll need to find the exact same one, otherwise it won't perform like the other dampers.
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KIT: Tamiya TA05-3R
ELECTRONICS: Novak GTB V.2, Novak Ballistic 3.5T, Futaba 3PM 2.4Ghz FASST Tx, Futaba R603FF FASST Rx, Yeah Racing SVP-0010MG
SHELL: Tamiya Evo VI, Tamiya Evo X, HPI 350Z