Uni-Lok 28mm

Uni-Lok 28mm

Market Segment

Additional information

Closure Diameter
Bottle Finish
Bottle/Package Types
Application/Fill Processes
Material Types

Key Performance Attributes

  • Re-sealable for convenient storage
  • Uni-Lok’s tamper band can be horizontally or vertically scored
  • Thin wing design for ease of application
  • Optimally designed for SP400 automotive fluid bottles

Closure Details

CSI’s family of Uni-Lok® closures are attractive, leak-proof closures designed with CSI’s patented wing-style mechanical tamper-evidence to protect the integrity of your brand.

Uni-Lok 28mm closures are perfect for motor oil and other automotive fluids packaged in plastic or glass containers.

Tamper Evident, Flexible, and Easy to Apply

  • Incorporates a patented wing-style tamper band that has a series of wings molded at the base of the closure that fold out of the way during application and spring back into place after the closure is applied for secure tamper evidence.
  • The wings provide interference with the bottle, and patented scoring technology causes the band to break when the cap is removed.
  • An unmistakable sound as the band separates assures the consumer the package is being opened for the first time.
  • Uni-Lok’s tamper band can be horizontally scored to remain on the bottle or vertically scored to come off with the closure, a particular advantage for returnable bottles.
  • The thin wings make Uni-Lok extra easy to apply.

Secure Sealing Liners

  • Secure, leak-proof sealing in a lined, two-piece design
  • Several liner material options
  • Liners molded into the closure shell for strong adhesion


  • CSI’s patented rotary compression molding process reduces stress in materials and lessens the possibility of cracking.

Decoration and Promotion

  • White or customized colors are available for eye appeal at the point of purchase.
  • Multi-color top printing is a colorful option.
  • Embossing and debossing the top of the closure are also available to enhance brand identification.
  • For under-the-cap promotions, standard offset printing reproduces artwork and graphics, while ink-jet printing provides alpha-numeric messages and can accommodate computerized, complex odds structures for games and sweepstakes.

Total Closure & Capping Systems Solutions

In addition to precision made quality closures, CSI provides capping equipment and unparalleled customer and
technical service across the globe.

CSI’s closure systems solutions and ongoing innovation help our partners maximize profits by increasing the
marketability of their brands and optimizing their total cost of operations.

Talk to our support

CSI Regional Sales Offices

North America +1 (800) 311-2740

Mexico & Central America +52 (55) 5566-8445

Japan (Tokyo) +81 (3) 5511-0036

North America +1 (317) 390-5000