Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4726008.
Silicone Gasket RTV Cap by RebelTaz
Fed up with the silicon RTV curing inside the tube of gasket maker due to flimsy caps that crack or split, I deigned my own. This is designed to fit standard tubes of silicone RTV gasket maker that you can get literally anywhere. The walls are thicker and there is a nipple that sticks down into the tube to help create a better seal. Print a few - they're small - that way you always have one on hand when you need it.
NOTE Due to either a Thingiverse bug or (more likely) shadowbanning, my models no longer show up under the [Newest] listings. If you want to see more of my models, please be sure to 'follow' me. If you print this, it would really help if you'd post a 'make' so that others could find this model.