This heavy Delrin dielectric insulator provides an electrical barrier between dissimilar metals. Use it anywhere stainless hardware is installed on aluminum. Spreader bases, blocks, gooseneck brackets, and cleats are all examples of items that should be isolated from the spars to prevent galvanic corrosion
due to dissimilar metals in close contact. Self adhesive, 4" x 10".
Use together with Mare Lube Tef on the threads of stainless steel fasteners where they penetrate the aluminum part and you will have a corrosion free installation.