[Cookie]

I've recently set up my own DIY van mount. For the screw fittings on the pipe joints I used PTFE tape to make a good seal, but still have a couple of very minor leaks in the system that I would like to sort out. Would I be better off using some kind of jointing compound such as this:

http://www.screwfix.com/p/fernox-hawk-white-jointing-compound-400g/69694?cm_sp=Search-_-SearchRec-_-Area2&_requestid=16409#_=p

Is jointing compound more leak proof than PTFE tape? Also, is it usable on plastic fittings?   

[chris turner]

I used PTFE and this stuff around almost every connection, not had any leaks in the system I set up before Xmas
http://www.amazon.co.uk/Loctite-1595265-Ultra-Repair-Putty/dp/B00A48Y0SG

[Cookie]

Thanks for the reply Chris. Does Loctite allow you to unscrew the fittings (if you need to at a later date).

[richard groves]

Hi Cookie,
I keep a roll of this in the toolbox
http://www.toolstation.com/shop/Adhesives+%26+Sealants/d180/Tapes/sd2420/Self+Amalgamating+Repair+Tape/p23876
comes in very handy for sealing joints with small leaks, you stretch it as you wrap it a few turns and it sticks to itself, is removable by careful use of a stanley blade.

[chris turner]

Thanks for the reply Chris. Does Loctite allow you to unscrew the fittings (if you need to at a later date).

Sure, with a hammer and chisel

Should of added I put it around all the connections that I don't plan on disconnecting. Everything was new in my van so I wanted the setup to stay as it was for a few years. Everything is fixed, bolted down, sealed...

[Cookie]

Hi Cookie,
I keep a roll of this in the toolbox
http://www.toolstation.com/shop/Adhesives+%26+Sealants/d180/Tapes/sd2420/Self+Amalgamating+Repair+Tape/p23876
comes in very handy for sealing joints with small leaks, you stretch it as you wrap it a few turns and it sticks to itself, is removable by careful use of a stanley blade.

Thanks - this looks better than the standard PTFE tape and at 19mm it's a decent width too.

[richard groves]

Hi Cookie,
I keep a roll of this in the toolbox
http://www.toolstation.com/shop/Adhesives+%26+Sealants/d180/Tapes/sd2420/Self+Amalgamating+Repair+Tape/p23876
comes in very handy for sealing joints with small leaks, you stretch it as you wrap it a few turns and it sticks to itself, is removable by careful use of a stanley blade.

Thanks - this looks better than the standard PTFE tape and at 19mm it's a decent width too.

Not as a replacement to ptfe tape though , its not for threads. e.g. I used some recently on my tank outlet - I had already put ptfe tape on a threaded tap body and may have over tightened it, I had a very small leak ( more of a drip every 20 secs or so ), rather than remove the tap and add more ptfe and the lever of the tap maybe not be at the 12 o clock position, I just wrapped a few turns of the almalgamating tape around the join as it was = no more leak