LOCTITE PC 4400 is an exterior finish, one-part clear coating for protecting, restoring and extending the life of painted surfaces.LOCTITE PC 4400 is a one-part clear coating that can be applied directly over existing paint on a vehicle to protect the paint and restore to look like-new. LOCTITE PC 4400 can be spray applied or wiped on with a pad applicator, offering excellent flow and leveling. This one-component coating also eliminates the lost time and quality risks associated with two-component coatings.