Fisherbrand™ Bouchon PolyClone phénolique noir

Forms an exceptionally tight seal and offer a good chemical barrier. Fisherbrand™ Black Phenolic PolyCone Caps are crack resistant.

PolyCone Lined Phenolic Caps 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. Great for everything from liquids, to soaps, to macro-invertebrates.