Mastic Gun tubes, what is the secret??

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steve yates

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Every time I use mine, it's buggered for using again when I come back to it, as the nozzle is hardened up. I am reduced to removing it and swabbing stuff on with cloths or sticks. I'm sure there is a simpler way, or can you just buy batches of replaceable nozzles?? So far its gorrila glue and sikaflex, costing me a bloody fortune :)

Please enlighten me.
 
steve yates said:
Every time I use mine, it's buggered for using again when I come back to it, as the nozzle is hardened up. I am reduced to removing it and swabbing stuff on with cloths or sticks. I'm sure there is a simpler way, or can you just buy batches of replaceable nozzles?? So far its gorrila glue and sikaflex, costing me a bloody fortune :)

Please enlighten me.
Click to expand...
No Nonsense Multi-Nozzles 5 Pack
 
Keep the old nozzles from other products, waterbased ones can be soaked to clean, silicone will pull out.
When you have used the nozzle, immediately wrap some insulating tape around the end, squeeze a little more goo out, then wrap over the goo.
Depending on the product, slicing the tape off will let you use the same nozzle again for 2 days to 2 months.
 
I mostly use CT1 which forms a plug that pulls out easily enough, good for a year or so. The colours are better than the clear...
 
I,ve not tried this but I read somewhere that if you leave the nozzle full with some mastic hanging out then you can pull it through once it’s cured.
I usually just ram a screw in the nozzle but that’s only good for a week or so.
 
ive got dozens of unused nozzles as I reuse them, simply put a bit of plastic bag or similar over the tube and screw the used nozzle back over it. When you come to reuse it, take the nozzle off and if it has solidified or not a thin screwdriver will pick the plug out quite easily. Remove the bit of plastic and replace old nozzle.
 
So say you install a sink in your head. What would you use to seal around the edges of it so that water can't leak under the lip and inside the vanity.

I can think of doezens of cases like that on my boat where some form of mastic would be used. Sealing 3m of perimeter of a pannel that goes over my fuel tank. It can be held inplace by the mastic itself. A ton of butyl would have to used otherwise along with at least 20 screws.

Also the cockpit sole to navigation stand/tower joint. It's not screwed to the sole but to the bulkhead. To butyl it would require a lip creating, the whole thing removed bytil added, along with it being screwed down at the bottom.

I love butyl tape (when it doesn't go all gooey from reaching 60c or more in the sun, but for some things MS polymer and other mastics are better IMO.
 
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