Tough material in gas ring or stove (9)

I believe the answer is:

grosgrain

I'm a little stuck... Click here to teach me more about this clue!

'tough material' is the definition.
'grosgrain' can be an answer for 'material' (grosgrain is a kind of material). I'm not sure about the 'tough' bit.

'gas ring or stove' is the wordplay.
'gas ring or' anagrams to 'GROSGRAIN'.
However, I am not sure how the anagram is indicated.

'in' is the link.

Can you help me to learn more?

(Other definitions for grosgrain that I've seen before include "silky stuff" , "silk" , "Fabric" , "material" .)

I've seen this clue in The Times.

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