This 4" x 1-1/4" High-Temp Phenolic Wheel is made of macerated canvas and phenolic resins. Phenolic, High Temp wheels are highly durable and capable of taking shock loads, is floor-protective, non-marking and non-conductive. Featuring temperature ranges of +550° F to -50° F. They are best suited for dry heat applications such as bakery convection ovens and more.
For more info, check out Caster Wheel Types.