Cap Sizer

Closures have two measurements: diameter and finish (i.e. 38/400). The first number of the closure size refers to the inside closure diameter (or outside bottle neck finish diameter) in millimeters. The second number, which is designated by industry standards, specifies other details of the finish dimensions, such as the number of threads and consequently the height of the finish.

To Measure Cap Diameter:

Place cap along upper ruled edge of page as shown. Read from one side of inner wall to the opposite side of inner wall of the cap to find diameter.

To Measure Finish Diameter of the Bottle:

Place finish along upper ruled edge of page as shown. Read from outer edge of thread on one side to outer edge of thread on opposite side of finish to find diameter.

Liner Definitions

Barrier Liner Foil liner creates a durable, chemical-resistant seal.

Foamed PE Liner Often called F-217, an all-around good liner for products that are non-reactive to polyethylene.

Foamed Pressure-Sensitive (PS-22) Liner Displays a moisture seal, in the form of a foam disc.

Plastisol Liner Suitable for many food applications. Allows hot-filled products to "draw a vacuum" as they cool.

Polyethylene Cone Liner Recommended for glass bottles where a tight seal is preferred.

Pulp & Polyethylene Liner Ideal for powders and cold-fill, non-acidic food products.

Pulp & Oil Liner Offers a degree of resistance to chemical products that are reactive to polyethylene.

Unlined No special sealing features and no liner.