The 30WC19 is a 18mm black cap with a poly cone insert. The poly cone liner acts as a wedge insert that seals the lip and the inner neck of a bottle, providing extra protection from leakage. These are recommended for use on glass bottles.
is a tough plastic that has a good chemical resistant. PP is translucent in its natural state but can have a glossy finish when produced with color. Some examples of common products with PP are dairy and medication containers. Polypropylene is suitable for hot fill applications of up to 165°F and is therefore great for autoclaving. It is not recommended for cold or sub-freezing temperatures. The Cary Company has an assortment of polypropylene plastics available for purchase, such as plastic caps and jars, which have a higher tolerance for chemical products.
This information has been provided as a general guide. It is the customer's responsibility to select the proper container for product and application compatibility.