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Small tube in puncture repair kit

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Old 06-13-21, 04:43 AM
  #1  
bkkboy
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Small tube in puncture repair kit

Can you let me know what this small rubber tube is for? It came with my puncture repair kit.
Thanks

Came with puncture repair kit. Made of rubber.

Came with puncture repair kit. Made of rubber.
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Old 06-13-21, 05:28 AM
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freeranger
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just a guess--maybe to hold a presta valve in place while you are putting the tube back into the tire (for those who don't keep the valve nut).? Never saw one before.
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Old 06-13-21, 05:35 AM
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Originally Posted by freeranger
just a guess--maybe to hold a presta valve in place while you are putting the tube back into the tire (for those who don't keep the valve nut).? Never saw one before.
When I look at the manufacturer's web page, the contents of the kit are listed and shown, but the tube is not included. I have bought three now, and the tube was in each of them.
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Old 06-13-21, 05:38 AM
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I have been wondering this for years. I haven’t been able to think of any functional purpose.
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Old 06-13-21, 05:39 AM
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It's for a Dunlop valve.

Outer stem


Inner plug with tube installed
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Old 06-13-21, 05:53 AM
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Originally Posted by Moe Zhoost
It's for a Dunlop valve.
Also known as a Woods valve
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Old 06-13-21, 07:18 AM
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Just curious. What brand repair kit includes that tube?
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Old 06-13-21, 07:48 AM
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Juan el Boricua
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It has been a while since I've bought a kit (I buy now bulk patches and a can a vulcanizing fluid) but, I remember seeing them in Taiwan/Chinese or mostly inexpensive kits; never on Rema (USA) or Park Tools. Can't vouch for other brands as it were either these two or the inexpensive ones. This type of valve is/was common in Asian and EU countries.
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Old 06-13-21, 08:10 AM
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Originally Posted by Juan el Boricua
It has been a while since I've bought a kit (I buy now bulk patches and a can a vulcanizing fluid) but, I remember seeing them in Taiwan/Chinese or mostly inexpensive kits; never on Rema (USA) or Park Tools.
Rema used to include these but Woods/Dunlop valves are so rare anymore, in the US at least, I would guess it wasn't a selling point for them.
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Old 06-14-21, 03:04 AM
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They came with SuperB TB-1121 puncture repair kit.
Welcome to Super B Bicycle Tools

Juan el Boricua: where do you get bulk patches from?

Thanks everyone.
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Old 06-14-21, 05:58 AM
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Juan el Boricua
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From Amazon; here's the link I used (but the're others):
https://www.amazon.com/gp/aw/d/B0017...?ie=UTF8&psc=1

For the fluid, I also use REMA, but buy it locally. Here's the link for Amazon:
https://www.amazon.com/Rema-Tip-Top-...g+fluid&sr=8-4
Remember that REMA works best as a system; you may use other fluids/rubber cement but will not be as permanent (this, my experience).
If you do get the can, make sure that the threads of both can and lid are clean of fluid and debris before refitting lid, close tight, and store upside down so that the fluid "seals"completely the lid, and in a cool, dry place; it will last longer (my first can was good for three years).

Last edited by Juan el Boricua; 06-14-21 at 06:09 AM.
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Old 06-14-21, 06:21 AM
  #12  
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Woods/Dunlop valves come in two types - those that need that tube and those that don't. Those that do not have a short flat rubber seal around the base part.

Back in Britain, way back in the 1970s I used to wonder what those tubes were for as well, and even here in Poland I never saw a Woods/Dunlop valve that required one either - until a couple of months ago when someone handed me a bike that had not been ridden in 25 years. The bike itself dated from 1980, and with a bit of fiddling I got a tube from my Asian tire repair kit to fit. I could not get it to work, sadly, because I could not get all the rotten remains of the old tube out of the valve body.

It was a good moment, though.
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Old 06-14-21, 06:34 AM
  #13  
bkkboy
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Originally Posted by Juan el Boricua
From Amazon; here's the link I used (but the're others):
https://www.amazon.com/gp/aw/d/B0017...?ie=UTF8&psc=1

For the fluid, I also use REMA, but buy it locally. Here's the link for Amazon:
https://www.amazon.com/Rema-Tip-Top-...g+fluid&sr=8-4
Remember that REMA works best as a system; you may use other fluids/rubber cement but will not be as permanent (this, my experience).
If you do get the can, make sure that the threads of both can and lid are clean of fluid and debris before refitting lid, close tight, and store upside down so that the fluid "seals"completely the lid, and in a cool, dry place; it will last longer (my first can was good for three years).
Thanks Juan el Boricua.
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