IJ. said:Crisp: If they're Stopper's they'll be 4 layer instead of 3.
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Update!
Just got done cleaning the Viton off my New Stopper (13km's old)
Seems that the Viton will set up harder in use this new one I gave it a quick soak in paint thinner and the Viton scrubbed right off with a stiff brush!
Ian, What do you "prep" them with upon reuse? (How do you apply/treat them?)
(I'm due a pull-down for that sticky valve... and may try to reuse this round...)
-crisp