Schrader valve cores, not all the same?

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Am I correct that schrader valve cores are not all the same.Neither of these fit the valve.

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Ian H

Ancient randonneur
The one on the right is a presta insert.
 
As above the one on the right is Presta

but also Schrader ones can differ - but only in the seal
some are designed for different environments
I think it is temperature and pressure related

or at least I think I read that somewhere
the difference is in the colour of the rubber (?) seal and not size or anything

no idea which bikes should use!
 

fossyant

Ride It Like You Stole It!
Location
South Manchester
On a forum full of environmentally friendly tightwads? :ohmy:

You'll be reported and banned!!!

Too much messing, and my life is too short. Did OP buy "Continental" tubes. Don't.

Vittoria ultralight or Decathlon own make cheap ones - work well, don't fail etc.
 
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