Non Transfer Blue Polyester with tamper evident properties. These labels are manufactured from blue non transfer polyester with permanent adhesive.  Large range of circular and rectangular sizes. Other sizes and shapes available to order, can be printed to your requirements (see printed tamper evident seals). Please contact us with your requirements. Available on reels of 250 , 500 and 1,000 seals. Examples: calibration seals, covering of recessed screw heads on electrical equipment, for applying across the join of where two separate covers meet on sensitive or warranted equipment, sealing important document envelopes, small boxes containing high value products including mobile telephones and jewellery , bags of precounted/weighed items, sealing CD cases, covering mobile phone cameras in sensitive areas etc. To ensure these are suitable for your application please ask for FREE MATERIAL SAMPLES.