| 摘要 |
<p>A seal device for sealing the heads of screws, bolts or the like against tampering. The seal device has a cap portion with a cavity, a peripheral flange and a depending deformable skirt. It is preferably of a one-piece construction made of material such as steel or tin, and is adapted to be used with screws, bolts or the like which have an inwardly stepped shoulder at the base of the head to receive the deformed skirt of the seal device. The invention also provides a method of sealing screws or the like using the above type of seal.</p> |
