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Sealing the deal – Straz Components Tyre Sealant Funnel

Posted by Matt | January 7, 2025 | 5 comments so far

Tyre selant being added to a bike tyre using a small 3D printed plastic funnel to aid the process. Three different versions are visible to show the three different colours available

Straz Components Tyre Sealant Funnel

Here’s a useful little bit of kit you probably don’t know you need.

This is the Straz Components Sealant Funnel, a nifty 3D printed tool with the simple purpose of helping you and me top up our tyres with sealant without make a complete mess of everything.

I first saw it on James Huang’s N-1 Substack newsletter last Friday and today it popped up on the Radavist. I’m guessing Tim Straz, the man behind the idea, is pretty pleased at the moment and probably getting lots of orders for it.

The tool is basically a funnel that threads onto your valve using a brass insert in the plastic 3D printed body. Take out your valve core, screw this in and pour in your goop of choice.

The funnel is brightly coloured so you don’t misplace it in your carefully organised/bombsite^* workshop/garage^*. Funnel capacity is 30ml so it should be easy to measure out doses or top up on a regular basis.

I like the idea and think Tim deserves some success with it. Expect copycat versions too, but remember original is best.

^* delete as appropriate.

Filed under 2025, News in January 2025

About the author

Matt is one of the founding Molefathers of the Muddymoles, and is the designer and main administrator of the website.

Having ridden a 2007 Orange Five for many years then a 2016 YT Industries Jeffsy 29er, he now rocks a Bird Aether 9 and a Pace RC-627.

An early On-One Inbred still lurks in the back of the stable as a reminder of how things have moved on. You can even find him on road bikes - currently a 2019 Cannondale Topstone 105 SE, a much-used 2011 Specialized Secteur and very niche belt drive Trek District 1.

If you've ever wondered how we got into mountain biking and how the MuddyMoles started, well wonder no more.

There are 5 comments on ‘Sealing the deal – Straz Components Tyre Sealant Funnel’

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GDAS says:

I’ll wait for the £25 ebike-specific version 🙄

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Posted on January 7, 2025 at 12:11 pm
- Matt says:
  
  The e-bike version will of course be heavier and need to be plugged in to work.
  
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  Posted on January 7, 2025 at 11:09 pm
  - Jem says:
    
    But it will be more fun to use!
    
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    Posted on January 8, 2025 at 12:08 am
Jem says:

Looks nifty and as you say, brightly coloured to find in the “bombsite” albeit quite expensive.
Always used a syringe 💉 with a length of clear hose attached and cheap too.

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Posted on January 8, 2025 at 12:07 am
Tony says:

I have a Stan syringe thing where the hose screws onto the valve. A bit more tricky to use and always with the risk of “blow back”!!. These look nifty.

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Posted on January 8, 2025 at 10:26 pm