Use of sealant when fitting hoses?

[sequena1]

I'm sure I've seen somewhere a recommendation to use a smear of silicone sealant when fitting water hoses to pipework/heat-exchangers etc. What's the general opinion on that technique. All advice gratefully received!!

 

[damo]

That's what I do - a smear of sealant, then push the pipe on, then leave for a while before tightening the hose clips.

Someone is bound to say it isn't necessary/it shouldn't be done, but having had problems with dripping connections in the past I now do it as a matter of course, and no longer have drips.

 

[boatbuilder]

You would be better off gently heating the pipe with a hot air gun and then using the right size good quality jubilee clip.

 

[damo]

New hose, new barb, new hose clip of the right size - all stuffed away at arms length in the corner of a locker, no room to heat the hose! Sealant helps it slide on easily, especially if the hose is coming on at a tight angle.

Whatever helps /forums/images/graemlins/smile.gif

 

[Alfie168]

At college they insist you do not use sealant on brass compression fittings. In the field..everybody does, and our favourite by miles is Plumb Center Jet Blue (which is white). Not to be used on plastics though.

With plastic a smear of silicone is fine.

The only obvious caveat is to make sure nothing in the sealant can degrade/react with anything in the pipework/fittings.

Tim

 

[VicS]

For very small sizes worm drive clips, even genuine Jubilee ones, are often unsatisfactory. Difficult to find alternatives but these are better.

The plastic "Snapper" one only for non-critical applications perhaps but I have never had one fail. They are difficult to undo though. The one on the right is super if access is bad as it can be done up by hand. I have seen the same sort of thing with just a screwdriver slot in the screw as well. Otherwise the one top left is the one to use. The screw head is slotted but the kit came with a special tightening tool with a flexible shaft.

 

[roger]

Some plastic items dont like sealants. We've had posts here on problems when using sealants to fit hoses to Jabsco toilets.

 

[TigaWave]

I've always considered the next time they need changing, and used ptfe, or some other lubricant that was available. Hot water then washing up liquid. I did change most smelly hoses at least every other season, and never had a smell problem.

 

[rogerthebodger]

[ QUOTE ]
The plastic "Snapper" one only for non-critical applications perhaps but I have never had one fail. They are difficult to undo though.

[/ QUOTE ]

Easy when you know how.

Take a pair of long nose pliers place over toothed part and twist.

The teeth slide apart sideways.

 

[VicS]

[ QUOTE ]
long nose pliers

[/ QUOTE ] Now why didn't I think of that. Thanks.

 

[lagoon]

You could try LSX available from plumbing stores . works on hot , cold & can be applied when wet .

 

[PCUK]

Never ever use silicone. It is the worlds slipperiest substance and the hose will simply slip off no matter how tight you make it.
Polyurethane would be better, but low heat as already described is best.