UN Rated 2.5 Gallon (10 Liter) Rectangular Natural HDPE Plastic Tight Head Container, Tamper Evident 70mm SC-76RTE (6TPI), Unvented. 100 PER CS. The 57WSAN is a UN Rated (UN3H1/Y1.8/100) 2.5 gallon (10 liter) natural high density polyethylene (HDPE) plastic rectangular tight head container with a tamper evident 70mm (Buttress 6TPI) neck finish. This pail comes with a fixed handle. Rectangular plastic tight head containers are ideal for storing paints, coatings, adhesives, mastics, additives, agricultural chemicals, viscous products and other applications.