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Selecting Closures Selecting Closures


Cap TypesThere are many factors to consider when selecting a closure for your container, such as how the product should be dispensed, if the packaging requires extra protection, and the overall style you'd like to achieve. As always, be sure to test your product with the packaging and closures to ensure proper compatibility.

Neck Finish

It is important that your cap properly fits the bottle or jar neck finish in order to obtain a proper seal. Screw thread or continuous thread closure sizes are expressed with two numbers separated by a hyphen or slash (ex. 24/410, 28-400). The first number (ex. 24) refers to the millimeter diameter measured across the inside of the cap's opening or the outside of the bottle's threads. The second number (ex. 410) refers to the thread style. For more information, visit our cap & neck finishes info page

Liner Types

Choosing a liner is an important part of the cap selection process. Some liners tend to withstand chemicals better then others, while other liner material types are better used for moisture barriers. Some of the more popular liner types include F217, PE foam, PV (poly vinyl), PS22 (plain or printed pressure sensitive), induction liners, and Poly-Seal™ cone lined. For more information regarding liner types visit the liner type info page . Always test your product with the liner you choose to be sure they are compatible.

Cap Types


Threaded Caps

The interior of a threaded cap has uninterrupted spiraling threads meant to match with the neck finish of a compatible container. Threaded caps are available in many styles and materials.
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Threaded Caps

Lug Caps

Lug caps are compatible with lug-finish containers , which have non-continuous threads. The internal protrusions on a lug cap intermesh with the threads on the container and require only a few degrees of rotation for proper application.
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Lug Caps


Child Resistant Caps ("CRC")

To remove a CRC cap, the user must push down on the cap while simultaneously turning it clockwise. These dissimilar motions make it difficult for children to remove such closures.
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Child Resistant Caps (

Snap Caps

A closure held in place by a bead (a depressed or raised circle or ring around a container or closure) rather than a thread.
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Snap Caps


Induction Lined Caps

Induction liners have several layers: pulpboard, wax, foil, and a polymer coating. When passed through an induction machine, the heated foil melts the wax and polymer, creating a hermetic seal with the container when solidified. Induction lined caps must be applied using an induction sealing machine .
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Induction Lined Caps

Tapered Corks

Natural tapered cork stoppers are made from a single piece of cork material and gradually decrease in diameter from top to bottom. To ensure easy removal, select a cork that will stick out about halfway after it has been pushed into the container's opening.
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Tapered Corks


Brush Caps

Each brush cap consists of a screw cap with a plastic rod attached to the inside. At the end of the plastic rod are synthetic hair-like bristles for precise product application.
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Brush Caps

Black Phenolic Ball Rod Caps

These black phenolic caps have a PE plastic rod attached on the inside. The end of the plastic rod has a round protrusion for applying product in small amounts.
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Black Phenolic Ball Rod Caps


Shrink Bands

Tamper evident shrink bands are made from PVC plastic and are usually perforated for easy removal. To use, slide the shrink band over your cap and apply heat to shrink it snugly to the container. For more information, visit our shrink band info page .
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Shrink Bands

Pumps

Pumps allow the user to dispense an equal amount of high viscosity product with each stroke. Generally, lotion pumps (left) are used to dispense larger amounts of product than treatment pumps (right), which are usually used on smaller containers.
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Pumps


Sprayers

Sprayers allow the user to mist an equal amount of low viscosity product with each pump.
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Sprayers

Disc Top Caps

Disc top caps allow the user to dispense product without having to remove the cap. Apply light pressure to the indented region on top of the cap (often labeled with the word "Press") to expose the orifice. When not in use, close the cap by pressing down on the raised end.
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Disc Top Caps


Orifice Reducers

Orifice reducers limit the amount of product dispensed by making a bottle's opening smaller. We offer several different varieties: orifice reducers that fit inside a bottle's opening, snap-on orifice reducers , and tamper evident caps with orifice reducers .
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Orifice Reducers

Twist Top Caps

To open twist top caps for use, simply turn the upper part of the cap counter-clockwise to expose the orifice. Twist the cap clockwise to close to help prevent leakage.
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Twist Top Caps


Flip Top Spout Caps

When the spout is flipped down, flush with the top of the cap, the dispensing orifice is closed to help prevent leakage. To expose the orifice, flip up the spout.
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Flip Top Spout Caps

Glass Dropper Caps

These closures consist of a plastic screw cap with a round hole in the top to accommodate a rubber bulb. A glass dropper tip fits inside the bulb. Squeeze and release the bulb to draw liquid into the glass dropper.
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Glass Dropper Caps


Yorker Spout Caps

Yorker caps reduce the orifice size of squeezable bottles by dispensing contents through a cone shaped spout. SKS offers yorker caps with a 0.3" dispensing orifice and caps without a hole . Both styles include red snap top caps.
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Yorker Spout Caps

Sifter Caps & Inserts

Sifters have several orifices to dispense dry products. Typically, a sifter cap has an internal bead that snaps onto the opening of a sifter bottle or sifter jar . A sifter insert fits snugly inside the opening of a sifter jar and has an external lip to keep it in place.
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Sifter Caps & Inserts


Snap Top Caps

A snap top cap features a small dispensing orifice and an attached hinged lid to reduce the possibility of leakage. Each hinged lid has a cylindrical protrusion that snaps securely into the dispensing orifice.
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Snap Top Caps

Dropper Caps & Plugs

A dropper tip plug fits into a bottle's opening reducing the size of the orifice. Dropper tip plugs are available in streaming or controlled styles. Unlined dropper tip caps fit over the dropper tips and screw onto each bottle's neck finish.
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Dropper Caps & Plugs


Push / Pull Caps

Each push / pull cap is comprised of a threaded ribbed polypropylene base and a PE plastic spout. To use, simply pull upwards on the spout to open and dispense the product and push down on the spout to snap closed.
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Push / Pull Caps



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