RTV sealant replacement nozzle
thingiverse
If you have a blocked or lost nozzle, simply print a new one. It was quicker than searching my garage for the old one - under one hour. Thread is m12 x 1.25, fits most tubes of rtv sealant. Tip in 1.8 mm and tapered inside so if you cut it shorter you get a bigger hole - or slice it in your slicer software.
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