harden (rubber or a similar material) by treating it with sulphur at a high temperature
the development of a method for fixing vulcanized rubber firmly on to mild steel

Connections NYT: Hints For Today's Puzzle, Tue, Jan 13

NYT Strands Today - Hints, Spangram & Answers for January 13

Today’s Wordle Answer Jan 13 #1669- NYT Wordle Hints & Updates

Today's NYT Pips Hints & Answers

Today's NYT Capture Hints & Answers

NYT Mini Crossword Answers Today - The Mini for Jan 13 Solved

Connections NYT: Hints For Today's Puzzle, Tue, Jan 13

NYT Strands Today - Hints, Spangram & Answers for January 13

Today’s Wordle Answer Jan 13 #1669- NYT Wordle Hints & Updates

Today's NYT Pips Hints & Answers

Today's NYT Capture Hints & Answers

NYT Mini Crossword Answers Today - The Mini for Jan 13 Solved