Element3™ Front Disc Brake Caliper Seal Kit (WK2110) by Raybestos®. Element3™ Disc Brake Caliper Seal Kit contains everything necessary for a complete sealing of the Brake Calipers. Element3™ brake products deliver a new level of control and confidence to drivers. Their premium brake line delivers what you’ve come to expect from The Best in Brakes® with the addition of upgraded product attributes.