Examples of use of caulk
1. Using a tool that is like a high–tech caulk–gun, the spacewalkers filled gouged tiles with a gooey gel.
2. Squirting in the caulk–like goop from a tank attached to the astronauts‘ spacesuit backpack would provide extra protection.
3. The actual repair –– applying black paint and caulk–like goo to the crevice –– would have been the quickest part, he said.
4. A repair carries the risk that imperfectly applied goo or caulk will leave beads protruding from a crack or hole –– potential hotspots during reentry.
5. And it doesn‘t have to cost a fortune up front; some solutions are as cheap as a $5 tube of caulk.