How to use a soft rubber tubing hose for a bicycle valve

August 21, 2015 4:43 AM

Many bicycle repair kits contain a short piece of ivory colored soft rubber tubing hose for use on a bicycle valve. How is this used? I've never seen it in or around a valve.

On http://www.amazon.com/Ivory-Rubber-Tubing-Bicycle-Cycles/dp/B00CW77E3K its function is described as
"Used on the valves of bike or bicycles to keep the valve core and valve stem be sealed up, and have the one-way air flowing function. Cut it into short length as your requirement to used on different type of valves perfectly."
I doubt this has to be cut véry short and used as a rubber sealing ring? Because it is sold in 15" lengths and in most kits it is 1" long.
How is this used?

Naturally, this is a very important and urgent question.

posted by Akeem to Sports, Hobbies, & Recreation (6 answers total)

Best answer: This is for the Dunlop-style of valves. The English Wikipedia article on these has no graph, but the German one does.
posted by Namlit at 4:50 AM on August 21, 2015

Best answer: It's used in Dunlop valves. This valve tubing has a habit of cracking or blowing out. I am not a fan.
posted by scruss at 4:51 AM on August 21, 2015

Best answer: To add, the upper of the two drawings, that is, the older Dunlop style, not the (yup) "Blitzventil" pictured below. The rubber is drawn in red.
posted by Namlit at 4:52 AM on August 21, 2015

Response by poster: Great!
I may actually have an old folding bike with deflated tires using Dunlop valves. I'll have a look to see if the valve tubing is cracked. Many thanks.
posted by Akeem at 5:07 AM on August 21, 2015

The 'Blitzventil' style sometimes has a rubber block instead of a ballbearing. It can sometimes distort and jam in place, so won't even let air in.
posted by scruss at 7:14 AM on August 21, 2015

Rema labels it as a glue spreader.
posted by aniola at 10:08 AM on August 21, 2015 [1 favorite]