LOCTITE® LB N-5000 is a silver-colored, nickel-based anti-seize lubricant paste of highest purity. It has the lowest practical levels of halogens, sulfur and heavy metals, including copper. Typical applications include locations where stainless steel fasteners are used. This product is typically used in applications with an operating range of -20.2 °F to +2,399 °F (-29 °C to +1,315 °C).