The material rubber gets tougher as you break it

 https://www.youtube.com/watch?v=AFXLZ7FEJc4 

https://en.wikipedia.org/wiki/Synthetic_rubber#Types 

https://www.aquasealrubber.co.uk/articles/the-different-types-of-synthetic-rubber/

https://en.wikipedia.org/wiki/Synthetic_rubber#Natural_vs._synthetic_rubber  

https://www.rubberandseal.com/what-type-of-rubber-is-used-in-space/

https://www.manuf-rubber.com/news/common-applications-rubber-components-aerospace-industry/

https://medium.com/@lauren.singer_47354/the-role-of-advanced-rubber-materials-in-satellite-technology-insights-from-advanced-technology-8eec2ea6fb4b 

https://ntrs.nasa.gov/api/citations/20100029591/downloads/20100029591.pdf