Thread sealant for drip filter

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Thread sealant for drip filter

Postby M8Harry » Mon May 27, 2019 3:55 pm

Hi all,

after plenty of googling im kinda confused so ill throw this to the brains trust.

I stripped down the stainless filter to give it all a deep clean and after removing a country mile of thread tape off the valve that controls the drip flow, im now left with a thread that isnt sealing water tight (i test with water first).

Im getting the vibe that thread tape isnt a great long term solution, so im a touch confused what I can use to seal up the thread on the valve with out potentially leeching anything into the alcohol (40%) im filtering.

im probably over thinking it but I would rather try and adopt best practice earlier than later.

all help appreciated

Cheers
Last edited by M8Harry on Mon May 27, 2019 3:56 pm, edited 1 time in total.
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Re: Thread sealant for drip filter

Postby bluc » Mon May 27, 2019 9:17 pm

I would stick to thread tape. Ptfe(thread tape) is supposed to be inert in ethanol and other stilling related chemicals..
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Re: Thread sealant for drip filter

Postby M8Harry » Tue May 28, 2019 7:22 am

Ok. Thanks a bunch.

I did notice that when I went to the kitchen I spotted something on the bench. Muggins here forgot to reinstall the o ring :angry-banghead:

It’s working great now, but thanks for the pointer on thread tape, I was confident I read somewhere it wasn’t ideal for alcohol over 20%. Happy to be wrong on this.
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equipment: Pure distilling Reflux Still with a 25L boiler

Re: Thread sealant for drip filter

Postby Teddysad » Tue May 28, 2019 2:08 pm

You will find that the PTFE tape comes in different colours. White is the thinnest, then yellow then pink. I tend to use pink for the best seal.
If it will be in direct contact with ethanol (rather that water) the yellow has better performance and durability
Last edited by Teddysad on Tue May 28, 2019 2:12 pm, edited 2 times in total.
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