Heavy Duty Lubricant | #400-HD

400-HD National Door Lube is an aerosol lube that stands out in its class. This heavy-duty, non-silicone lubricant is ideal for all garage door and operator requirements and has become a go-to for garage door service companies. 400-HD efficiently penetrates frozen components, threads, bearings, and all kinds of metal surfaces; it also helps to avert rust, corrosion, and dust/dirt accumulation that can obstruct the performance of garage doors and operators. To apply, simply use the specified 3-way nozzle, which adjusts from high, medium, and low-intensity spray.