what perishes inner tube.

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Smurfy

Naturist Smurf
What is the tube material type and oil type?

This compatibility table suggests that butyl (the most common inner tube material) will not fare well with mineral oil.

http://www.mossrubber.com/pdfs/Chem_Res.pdf
 

Pat "5mph"

A kilogrammicaly challenged woman
Moderator
Location
Glasgow
I wouldn't use butter, that'll go sticky for sure.
A squirt of GT85 from the straw maybe?
 
[QUOTE 4036Vaseline ber: 9609"]thanks for that, very interesting. I would guess inner tubes are probably Butyl.

So animal fats, veg oil, olive oil, butter etc should be ok, out of those, which would you think is less likely to go sticky.?

and what about Vasiline ?(is that mineral)[/QUOTE]
I would have thought that vaseline might be okay as it used on babies, I also use when I get chapped hands so I would have thought that it should be free from nasty chemicals likely to damage the inner tube.
 

Smurfy

Naturist Smurf
I'd go for the rubber grease if it is the valve that is sticking on its seat, as the presta valve design has a tiny rubber seal on its face. And if you haven't got one then buy a track pump, as it makes pumping tyres up so much easier :pump:

Edit: Put the rubber grease on the valve stem and pump vigorously. Hopefully the air will blast the grease into the valve.
 

RichardB

Slightly retro
Location
West Wales
Red rubber grease, definitely. The only problem is that you need a tiny amount (otherwise it gets everywhere, and the red really stands out), and it's usually only possibly to buy it in those screw-top containers with half a kilo in, of which you need about a millionth. GT85 or WD-40 should be OK, although I have no source for that. other than using them around rubber seals and the like for many years without an issue. Silicon spray would be good, as it evaporates to leave a dry lubricating film. I have used that for years on car door seals to prevent sticking in icy weather (makes note: must do that this weekend) and it hasn't done any harm.

(Edit to add: rubber seals sticking sounds a bit like the rubber is degrading and getting sticky - perhaps time to get new tubes before it starts to get porous?)
 

mybike

Grumblin at Garmin on the Granny Gear
[QUOTE 4036130, member: 9609"]thanks for that, very interesting. I would guess inner tubes are probably Butyl.

So animal fats, veg oil, olive oil, butter etc should be ok, out of those, which would you think is less likely to go sticky.?

and what about Vasiline ?(is that mineral)[/QUOTE]

Don't use butter, the crumbs interfere with the action of the valve. sorry
 

Nibor

Bewildered
Location
Accrington
I would have thought that vaseline might be okay as it used on babies, I also use when I get chapped hands so I would have thought that it should be free from nasty chemicals likely to damage the inner tube.
Vaseline is mineral grease and will rot rubber
 

Tom B

Guru
Location
Lancashire
Talc.... Talc.... Talc.

Lash it around your tyre, puff it around your hole. It stops stuff sticking, it lets the tube move and inflate nice.
It smells good and you can use the rest to stop your ball sack / breasticles chaffing/sticking.
 

sidevalve

Über Member
Talc.... Talc.... Talc.

Lash it around your tyre, puff it around your hole. It stops stuff sticking, it lets the tube move and inflate nice.
It smells good and you can use the rest to stop your ball sack / breasticles chaffing/sticking.
No more !!! That is WAY too much information !
As for the OP you could just try buying some new vale cores - only a couple of quid for a pair with new caps too.
 
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