Wards Riverside red rubber bike tubes- 1930s 1940s

[Ak40]

pair-- both leak by stems< maybe they can be fixed?
you dont find these often.. 26x2.125 size
$30 shipped...sadly shipping costs a ton these days,so thats the way it is.

 

[Goldenrod1]

If they don't seal, I heard that a drop of oil will expand and seal the valve. In or by stems?

 

[Ak40]

If they don't seal, I heard that a drop of oil will expand and seal the valve. In or by stems?

i believe its where stem is put on tube..

 

[WES PINCHOT]

I HAD ONE AND JUST HANDELING THE STEM TO INFLATE THE TUBE
THE STEM PULLED OUT. THESE WERE MADE IN THE EARLY 1930'S .
THEY ARE NEOPRENE RUBBER NOT UP TO QUALITY OF THE BLACK RUBBER.
NOT SURE OF THE COMPOUND ADDED TO RUBBER THAT MAKES IT BLACK,
BUT SURE MADE RUBBER MUCH MORE DURABLE.

 

[38Bike]

https://en.wikipedia.org/wiki/Carbon_black

 

[WES PINCHOT]

https://en.wikipedia.org/wiki/Carbon_black

THANKS FOR THE REAL STORY OF BLACK VERSUS ORAMGE NEOPRENE RUBBER.
I WAS NOT SURE ABOUT THE ADDITIVE AND THIS EXPLAINS IT ALL!
THANKS FOR THE INFO.