Black Phenolic 18-400 Lid with PP Polycone Liner.
This is a Black Phenolic 18-400 Lid with PP Polycone Liner. This cap comes with a Polycone liner, a built-in polypropylene (PP) natural-colored conical-shaped liner that provides a tight seal. This lid is made of phenolic, an industrial grade, highly rigid, plastic with a good resistance to solvents and high temperatures. This closure fits a container with a 18-400 neck finish. The first number refers to the diameter of the container's opening (in mm). The second number refers to the thread/style/depth of the closure's skirt.
Color : BlackSize : 18-400Material : PhenolicSize : PolyconeDiameter : 0.75 in-
Great caps
Thees are nice and sturdy, the cone liner is of a good sturdy, ridgid poly one too. I've come across some bad caps before where the cone liner cracks or is too thin for long term use, but these caps are really great .