Abstract: An assembly including a cover device and a cap device for protecting a flange is provided. The cap device may include a cap cover for protecting at least a portion of a front surface of the flange and a retainer comprising at least two cap securing members releasably engageable with an inner surface of the flange in an interference fit, where the retainer is operable to releasably engage the cap cover in a friction-fit. The cover device may include a cover face for protecting the front surface of the flange, the cover face comprising an outer periphery; and an integrally-formed lip depending from the outer periphery of the cover face and perpendicular to the cover face, the lip comprising at least two cover securing members and releasably engagable with a peripheral edge of the flange.