MRC:
Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.SUPP
Supplementary Features:
Primer for structural iron and steel; general plant maintenance; sealer for concrete floors; primer and finish for motor, generator, and transformer housings; anti-moisture coating on thermostat, water cooler, and truck control parts; sealer for pipe and stud threads and vacuum systems; anti-corrosion protection for winches and other out-door apparatus; electrical insulation for coils and armatures; adhesive for gaskets; coating for interior of hydraulic tanks, and bearing cases