Bring your paint cans into conforance with 49 CFR with an Armlock® Paint Can Overseal. They meet UPS and USPS requirements, and are designed, tested and certified to pass UN hydrostatic pressure test of 100 kpa. Precision molded HDPE overseas installs easily with a mallet or paint can closer and fits most paint cans. Our can clips are of tempered steel, snap into groove in top of lid, and helps prevent lid from popping loose during shipment. Sold by the each, you won't want to be without them.