Technical Specifications Bolt Circle Diameter (In) 5.5 – 5.562 Bolt Holes 6 Brand SKF The CR Scotseal hubcap is stronger than aluminium. Manufactured from DuPont™ Zytel®, Scot seal TF hubcaps have been proven to withstand tough over-the-road conditions, resisting chemicals, road salt, rock sand bumps. The DuPont™ Zytel® construction makes the TF hubcap 1-1/2 pounds per axle lighter.
