Phenolic Caps/Closures, Cone-Shaped Polyseal® Liner - 18-400 - 73809-18400

Black phenolic cap has a securely mounted polyethylene cone-shaped liner which offers a two part seal. The closure forms a seal around the rim and the polyseal cone forms a seal against the inner diameter of the vial opening. The design has superior torque retention and excellent sample storage and re-sealing properties.