Phenolic Caps

Our Black Phenolic (Thermoset) Caps with Poly-Seal cone liners, form an exceptionally tight seal to serve as a chemical barrier. The Poly-Seal cone liner, made of low density polyethylene (LDPE) plastic, molds itself to rim of the bottle neck as the cap is screwed on, virtually eliminating leakage, evaporation, contamination, binding, and backing off. These caps have a wide range of uses; from liquids, to soaps, to essential oils and medicinal syrups, to macro-invertebrates. Ideal for pharmaceutical applications.