unvulcanised
/ʌnˈvʌlkənaɪzd/
adjective
- Not treated with sulfur or other chemicals to make rubber stronger and more elastic; raw rubber that has not undergone vulcanization.
- Factories must handle unvulcanised rubber carefully because it degrades quickly.
- Unvulcanised natural rubber is used in some adhesives and sealants.
- The unvulcanised rubber was too soft and sticky to use for tires.
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