MLS design fits 93mm or 94mm bore, .036” Thickness - Cometic MLS design gasket for use on BC O-ring cylinder jugs. Also features .504" ID alignment holes for BC's dowel pinned cylinders. Three layer gaskets combine advanced materials with state-of-the-art manufacturing processes to provide custom-tailored solutions to meet the needs of each individual application. The Multi-Layer Steel gaskets are comprised of multiple embossed layers of both proprietary high temperature coated and uncoated stainless steel, requiring less clamp load, creating less bore distortion, and conforms load distribution across the sealing area.