Caps and Closures

Find Food and Beverage Caps and Closures from CSI

At Closure Systems International (CSI), we offer a deep product portfolio. Choose from over 90 stock closures for various applications or custom closures tailored to the most demanding specifications. We also fulfill both small and large bottle caps orders, working with regional manufacturers, co-packers and distributors as well as multi-national brands.

Whether you need an 18mm cap for 50 ml bottles of distilled spirits or a 133mm closure for packaged food containers, CSI makes it easy to search for the perfect cap or closure to meet your exact specifications.

Use our CAPFINDER to select from a diverse array of stock food and beverage caps and closures, to get started on a product comparison or make purchase request. Keep reading to learn more about our closures search functionality and custom closure capabilities.

Caps and closure questions?

Market segment

One of the most common ways that customers start their search for CSI stock bottle caps is by market segment. Choose from 11 different market options to find the one that best fits your product category:

  • Automotive Fluids
  • Bottled Water
  • Distilled Spirits
  • Liquid Dairy
  • Non-Carbonated Beverages
  • Wine
  • Beer
  • Carbonated Soft Drinks
  • Food
  • Malt Beverages
  • OTC Pharmaceuticals

Caps and closure questions?

Closure diameters

If you are trying to find a standard cap to fit an existing package, then diameter and size will be one of your most important filter. CSI offers 17 different closure diameters that range from 18mm to 133mm so you can choose the diameter that matches your specifications.

Beverage packaging type

Not all types of bottle caps are compatible with all types of beverage packaging. Quickly narrow your closure search in our CAPFINDER by selecting from eight different kinds of packaging:

  • Aluminum Bottles
  • Glass Non-Returnable Bottles
  • HDPE
  • PET Non-Returnable Bottles
  • Cartons
  • Glass Returnable Bottles
  • HDPE Non-Returnable Bottles
  • Pet Returnable Bottles

Caps and closure questions?

Closure material

CSI makes stock closures from four primary materials: Aluminum, CoPolymer, Polyethylene, and Polypropylene. If your company is looking to achieve its sustainability goals, nearly all of our plastic closures have the option to be manufactured from our PolyCycle® post-consumer resin (PCR), in both PE and PP. Contact us to find out if your closure specifications can be met using PolyCycle PCR.

Application fill process

Different types of bottle caps can withstand different types of application and fill processes. Simply select your product fill process in CAPFINDER, choosing from hot fill, hot fill with pasteurization, retort, cold fill, cold fill with nitrogen pressure, ambient fill, ambient fill with nitrogen pressure, aseptic fill, carbonated, or extended shelf life.

Bottle finish

For a truly granular search, our CAPFINDER filter allows customers to pick almost 70 standard bottle finishes to find the right CSI stock closure to meet the quality you expect and performance you demand.

Caps and closure questions?

Compare closures

The Capfinder COMPARE function allows you to directly analyze up to four closures at a time. Compare all the features, specifications and key performance attributes in a side-by-side chart to narrow in on the best closure for your application. In addition, you can directly start a purchase request for one or more of our stock closures, or ask for a quote from our customer service team. (Click here for tips on how to use the Capfinder comparison tool.)

Customized bottle caps from CSI

In addition to our wide portfolio of stock closures, CSI also offers the ability to develop custom caps and closure to suit the most demanding specifications. Whether you have sustainability goals that you are trying to reach, or a challenging package problem you need to solve, our team’s innovative Product Development Process can help create a closure design to meet your goals and budget.


If you have questions about specific caps or CSI custom closure capabilities, fill out the form below and our customer care team will be in touch.