Diameter: 27mm, 36mm. Material: aluminum The keyhole sealing device consists of two pads: a movable and a fixed ones. The lower part has the form of a flat ring and is fastened around the keyhole; it does not prevent to close of the lock. The upper movable cover blocks the key hole and prevents cracking. Sealing is carried out with plasticine with a control thread, the print is made with a stamp with engraving.