Natural HDPE modern rounds feature side panels to allow for label application. The sloped shoulder of this bottle allow for maximum fill capacity.

 

Attached black thermoset (phenolic) caps with Polyseal cone liners form an exceptionally tight seal and offer a good chemical barrier. This liner molds itself around the sealing areas of the finish as the cap is screwed on, virtually eliminating leakage, evaporation, contamination, binding and backing off.