Comments about Quality Park� Instant Seal #10 Reveal-N-Seal Security Business Envelopes, 500/Box:
Nice envelope with great security BUT it is difficult at best to try to seal these envelopes. On top of that, I have found that many times when I use these envelopes, the seal will not stick. I end up putting a piece of tape to secure it. I will not buy this product again.
Bottom Line No, I would not recommend this to a friend