Listings vary. Most describe bristle-free brushes as “high-heat resistant” or designed for steam-activated cleaning on hot grates but do not list a specific temperature. One listing gives a numeric limit of 250°F; others avoid a number and recommend using the brush on hot grills with water/steam. Check each product’s details for any exact temperature rating before use.
Listings highlight bristle-free coil or mesh heads and nylon-bristle heads as alternatives to wire brushes. Descriptions commonly label these as “bristle-free,” and several note that nylon bristles avoid the risk of wire bristles lodging in food.