Wheel Material : Casters are available with a wide variety of tread and wheel materials. Not all are suitable for high temperature use. Of those that are, polyurethane— this typically has the lowest temperature rating, at approximately 180 degrees F. Glass-filled nylon wheels can be used up to approximately 350 degrees (if the casters have the appropriate bearings and grease; see below).

Rigid casters are casters that remain in one position. They will not rotate like a swivel caster will. Rigid casters give you great stability but do not give you the mobility advantages that swivel casters give you. For best results, most clients will use a combination of swivel and rigid casters to give them the most favorable mix of stability and maneuverability.