Jonny TR6 Posted January 24 Report Share Posted January 24 Need some advice (when don't I !) on the best means of sealing an interference fit, that may have to come out from time to time. If you think male into female and then ensuring as air tight a seal as possible. I'm thinking of some sort of liquid rubberised compound that hardens and forms a coating around the male part, but then allows the male part to be removed. No sniggering at the back, I'm doing enough of that as I type.... Quote Link to post Share on other sites
RogerH Posted January 24 Report Share Posted January 24 If it is an interference fit then it should not require a sealant. When removal is require can it be pressed out in one direction or the other? However should it be a tight push fit then it may require a sealant but how do you keep it where it is needed. Roger Quote Link to post Share on other sites
Hamish Posted January 24 Report Share Posted January 24 Sounds like a job for a bearing sealant locktight https://www.hendersonbearings.co.uk/loctite-641-10ml.html?gad_source=1&gclid=EAIaIQobChMIgYH2wdT2gwMVG41QBh2VZwvZEAQYASABEgLdVfD_BwE Quote Link to post Share on other sites
Jonny TR6 Posted January 24 Author Report Share Posted January 24 Thanks both - just had a root around in the workshop and stumbled across the perfect solution. Heat shrink tubing. I’ve therefore emailed a company called Hilltop products, so will see what they come back with. The bits I have are too thick walled. The fit will be interference with the final solution ! Cheers Jonny Quote Link to post Share on other sites
michaelfinnis Posted January 24 Report Share Posted January 24 How do you get heat shrink into an interference fit? What would that achieve anyway? Quote Link to post Share on other sites
Jonny TR6 Posted January 24 Author Report Share Posted January 24 The heat shrink goes around the male bit and is shrunk on. It then takes up the very small amount of play to make the male to female connection a snug one. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted January 24 Report Share Posted January 24 Is it April already? Quote Link to post Share on other sites
Z320 Posted January 25 Report Share Posted January 25 I wonder too Quote Link to post Share on other sites
Hamish Posted January 25 Report Share Posted January 25 Jonny now intrigued as to what the job is. Can you share pictures of the project you have ongoing. ? Quote Link to post Share on other sites
RogerH Posted January 25 Report Share Posted January 25 That sounds like a serious bodge. The heat shrink will last no time Why not use something like JBWeld ar Araldite Roger Quote Link to post Share on other sites
michaelfinnis Posted January 25 Report Share Posted January 25 12 hours ago, Jonny TR6 said: The heat shrink goes around the male bit and is shrunk on. It then takes up the very small amount of play to make the male to female connection a snug one. If there is play then it is not a interference fit. Quote Link to post Share on other sites
RogerH Posted January 25 Report Share Posted January 25 1 minute ago, michaelfinnis said: If there is play then it is not a interference fit. I think Jonny is interfering with it. Roger Quote Link to post Share on other sites
Jonny TR6 Posted January 25 Author Report Share Posted January 25 1 hour ago, RogerH said: That sounds like a serious bodge. The heat shrink will last no time Why not use something like JBWeld ar Araldite Roger I don't want it permanently fixed, otherwise araldite etc would be spot on. It's a low stressed, non mechanical item, just needs a tiny amount of slack taken up. Anyway - I'll leave it there. Quote Link to post Share on other sites
RogerH Posted January 25 Report Share Posted January 25 (edited) Hi Jonny something like one of the Loctite (non-permanent) Stud lock fluids. Here you go Loctite Blue Roger Edited January 25 by RogerH Quote Link to post Share on other sites
DenisMc Posted January 25 Report Share Posted January 25 (edited) Hi Jonny, I suggest that one of the Loctite products, as already mentioned, would be the best solution. Going back to basic engineering there can be an interference fit, which will always require pressing in or a transition fit, which, depending on the actual sizes, can range between a light interference fit to a hand push fit. Perhaps you have the latter or an interference fit where the mating parts aren't round. Good luck! Denis Edited January 25 by DenisMc Quote Link to post Share on other sites
Jonny TR6 Posted January 25 Author Report Share Posted January 25 Thanks chaps - will check out the Loctite Blue Quote Link to post Share on other sites
Mk2 Chopper Posted January 26 Report Share Posted January 26 I've used red on a bolt that kept loosening on my bike, I used red as I don't need to remove it again. Works brilliantly though. Gareth Quote Link to post Share on other sites
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