The sealed lid features automatic positive-pressure relief that vents between 3 and 5 psig (0.2 and 0.35 bar) to guard against rupture or explosion. The tough powder-coat finish resists chemicals and stands up to demands of rigorous use. Equipped with a stainless steel flame arrester which dissipates heat to stop flashback ignition. Use the Type I safety can funnel (included) to pour into smaller openings. This polypropylene funnel attaches to the spout neck of Type I Safety cans that are sized 1-gallon and larger. The two position funnel folds down for when you fill or store the can, and stays up for when you pour. Large rounded bowl provides protection from splashing and spillage. Durable construction holds up to heavy use.