Thread sealer

[Andy AC]

Hello guys, I've got a beermaster condensing unit with a fusible plug on the receiver that leaks around the threads. Can you guys recommend a good thread sealant for use on fridge gas or will plain old ptfe tape do?

Andy

[chillin out]

ptfe tape would do, other than that I have previously welded it in.

Chillin

[Andy AC]

How did you weld it in without damaging the fuse?

[monkey spanners]

I've been using 'Trublue' made by a company called Rectorseal and sold by RPW. Its only a few quid for a 50g tube. I like it better than 'leaklock' which does the same job and is sold by NRS/climatecentre, it also used to be blue but is now in a yellow tube for some reason.

Jon

[Coolie]

good old ptfe with locktite for that extra bit of peace of mind...

[chillin out]

How did you weld it in without damaging the fuse?

I welded the fuse as well.

It was on a beer master and it was in so tight my spanner just rounded off the corners. There was no other option but to seal it up for good and fit a hp switch.

Chillin

[Andy AC]

HRP didn't have anything in stock, so I ended up just using the ptfe - Worked fine.

Andy

[Lowrider]

Depends on the refridgerant. PTFE will only work on R22. R407C and R134a are known to degrade the ptfe, so only loctite 55 can be used! only dowside is, it takes 24 hours to dry!

[Andy AC]

Lowrider - I didn't know / even thought about the possibility of degradation with 407c. I'll find out next year during the next maintenance visit

Andy

[Lowrider]

Lowrider - I didn't know / even thought about the possibility of degradation with 407c. I'll find out next year during the next maintenance visit

Andy

It is actually the oil doing the demage, not the refridgerant!

Leak lock (brand name) can only be used on R22, same as ptfe.
All other refridgerants used you need to use loctite

[nike123]

Depends on the refridgerant. PTFE will only work on R22. R407C and R134a are known to degrade the ptfe, so only loctite 55 can be used! only dowside is, it takes 24 hours to dry!

Loctite 55 is cord made of Polyamide and don't need any drying.
http://www.loctite55.co.uk/oem/55/_gfx/55_EN.pdf

Did you mean Loctite 554?
http://tds.loctite.com/tds5/docs/554-EN.pdf

[Lowrider]

Loctite 55 is cord made of Polyamide and don't need any drying.
http://www.loctite55.co.uk/oem/55/_gfx/55_EN.pdf

oops, my mistake! Should be loctite 577 (got it part right! I knew the was a five in and two numbers are the same!)