Crafty Dab Sure Seal Envelope Glue is part of Crafty Dab's spectacular line of glue products! Our envelope glue seals over 1,000 envelopes along with gluing all paper products. Easy to use with its no mess, no leak applicator, the glue is fast drying, non-wrinkling and washable. Crafty Dab Envelope Glue is the perfect tool for your office needs! Each bottle includes 1.7 oz. Non-toxic.