The sticker came off when using the ring. I washed the oil off my wok, dried it with paper towels, and heated the wok over a high flame to burn off any remaining water. The ring worked perfectly for this, then I saw the burned sticker under the stove grate when finished. Read more. 5 people found this helpful. Helpful.

https://www.amazon.com/International-NCWS9-7%C2%BE-Inch-9%C2%BE-Inch-Reversible/dp/B00012F3X6