A:AnswerHi Puzzle, thank you for your question and interest in Model:SWOKRINGW. Per the website, this Wok Ring is compatible with all 36 inch Gas Cooktops.
A:AnswerYou can use cast iron on any cook surface. You just need to be careful. Sliding might be too much for your cook top. It is not so much the material as the denseness of it, which is why everyone likes cast iron.
