2'' and 3/4'' push on cap seal are alternative seals for metal drum cap seal, it is often used on 210L steel drum openings since its specification fitted into the opening neck. It is necessary for every close head steel drum to be covered with such cap seal, with its tamper-proof and contamination-proof characters.
Such EZ push on plastic cap seal is made from polypropylene material and easy to apply, and non-rust and sharp edges or burrs at all. The installation and pull-off can be achieved both by hand, relatively more convenient than metal cap seal.