Abstract: Disclosed herein is a one part moisture cure sealant which is cured under an ordinary temperature by reaction with moisture contained in the air. This sealant contains a cure accelerating catalyst of: ##STR1## in a sealing composite containing urethane prepolymer. Due to the action of this catalyst, not only the cure rate is improved but difference in the cure rate between a low-temperature/low-humidity season and a high-temperature/high-humidity season is reduced. This sealant is also excellent in storage stability.

Abstract: A method and apparatus for performing repetitive cycles of panel coating operations using a programmable manipulator including a manipulator arm movable along a plurality of axes. The apparatus comprises a hand unit carried on the manipulator arm. The hand unit is movable so as to bring the brush held by it into resilient contact with an area of the panel to be coated. A coating material is injected into the brush at a predetermined rate while the brush is held in resilient sliding contact with the panel and while the manipulator arm moves about the panel to coat a preselected area of the panel. After the preselected area of the panel has been coated, the manipulator arm is moved to move the brush out of contact with the panel. Between coating cycles, the manipulator arm moves the brush into a storage chamber where it is treated to prevent the coating material from caking on the coating brush.