ROYCO 44 is a heavy-duty antiseizable compound developed for use in aircraft engine spark plugs, igniters and threaded fittings and fittings. ROYCO 44 has a consistency similar to modeling clay and is black in color.

Recommended for use as anti-seize component for threaded fasteners and fittings, as well as for spark plugs, igniters and similar threaded aircraft engine accessory equipment. Due to the graphite compound in Royco 44, this material should not be used in contact with aluminum, magnesium, cadmium or zinc alloys and coatings without preliminary evaluation.