Permatex Bolt Mark 21263 Indicator Paste, 6 mL Tube, Liquid, Pure White

Bolt Mark is a convenient visual method for identification of vibratory loosening or tampering in nuts, bolts, fasteners and assemblies. This tamperproof torque seal provides warranty protection against tampering. Marks will be easily broken if parts are tampered with or become loose and is highly visible under ambient light and fluorescent under UV light.