Specifications
The 30W21C is a 20mm black cap with a Phenolic cone insert. The Phenolic cone liner is made of LDPE and 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, but can also work with plastic containers.

Material:

Phenolic resin (Phenol Formaldehyde Resin - PF) is a durable thermoset plastic popular for its molding and physical assets. It is a result of a combined reaction between phenol and aldehyde. Known for its strength, heat, and chemical resistant abilities, phenolic resin is used to mold solids and is considered to be quite versatile, making it a good fit for a range of consumer and industrial products. Even though phenolic holds up well under certain levels of heat, phenolic caps will decompose at 220°C (428°F) or higher. Unlike other plastics, phenolic closures are capable of maintaining their form and attributes when exposed to corrosive chemicals. Phenolic caps are often used with containers that store chemicals and essential oils, making it an excellent choice for laboratories. The Cary Company stocks phenolic rod caps and various other phenolic caps with liners or inserts.

Disclaimer:

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. The Cary Company does hereby disclaim any and all warranties, expressed or implied, including any implied warranty of merchantability or fitness for a particular purpose or use. We are not responsible for consequential damages arising from customer's selection and use of containers, container and label dimensions, and/or closures supplied by us.

Additional Information

More Information
Neck Width 20 mm
Neck Finish 20-400
Liner Compatibility Glass, PE (HDPE, LDPE), PET, PP, PVC, Universal
Color Black
Material Phenolic
Case Pack 5,000 ea.
Pallet Pack 324,000 ea.
Case Dimensions 22" L x 15" W x 14" H
Q & A
Customer Questions
Can you ship internationally? Where are you located?
The Cary Company online ordering platform is only set up to ship within the United States. For international shipments, please contact us at 630.629.6600 or Sales@thecarycompany.com, and we will be happy to process your order. Our main warehouse and office are located in Addison, Ill. We also have warehouses in across the United States that you can see here. Thank you for choosing The Cary Company.
Can this phenolic cap handle heat?
Phenolic caps are known for their heat-resistant, temperature tolerant abilities. In addition, phenolic caps have a superb chemical resistance.
What applications are commonly used with this phenolic cap?
Phenolic caps are commonly used in the pharmaceutical sector and are often used to contain chemicals, aggressive liquids or aromatherapy products such as essential oils. The closures are autoclavable and compatible with glass or plastic containers.
Can shrink bands be used with phenolic caps?
Yes, shrink bands can be used on phenolic caps as long as the shrink band size is compatible with the cap size.
What does it mean that this PolyCone cap is phenolic?
PolyCone caps are a type of phenolic cap. This means the PolyCone cap is heat-resistant, temperature tolerant and has a superb chemical resistance.
What applications are commonly used with this PolyCone cap?
PolyCone caps are great for bottling viscous products such as oils, soaps, and liquids.
What does the cone in this PolyCone cap do?
This conical shape provides an excellent seal across the top of the container and also seals across the inside diameter. The PolyCone liner acts as a wedge insert that seals the lip and the inner neck of a bottle, providing extra protection from leakage.
What does it mean that this PolyCone cap stops leaks?
PolyCone lined caps can be used to seal and reseal a container. These threaded closures provide a seal on the top and inside diameter of a bottle, which offers additional leak protection.
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