This security seal is supplied mainly to Security Police for use in surveillance activities. It was first developed for use in one of the UK's most prestigious buildings where covert security and protection is required. The face material is clear vinyl, which has a good tensile strength and is backed with a very high tack adhesive.
This security seal has interlocking security cuts and is printed with a U.V. (invisible) ink. Consequently any tampering can easily be detected by using a U.V. light source.