• Polystyrene foam liner coated with torque-activated adhesive
  • Requires no heat induction equipment
  • Seals to most container materials with varying degrees of adhesion
  • Single-use foam seal peels easily from container
  • Indicates tamper evidence
  • Recommended for sealing dry products

Products Details

  • Technical Specs
  • Product Highlights
  • Applications
  • Available Options

Material: Polystyrene Foam

Adhesive: Torque-activated

Standard Diameters: 15mm – 125mm

Standard Thickness: 0.020

Pressure seals DO NOT require induction sealing machinery.

Pres-On’s cap liner materials and size offerings are compatible for most bottle & cap sizes/designs, and products, however it remains the responsibility of the end user to confirm if the liner is suitable for the intended use

In order to confidently produce the highest quality liners and seals, Pres-On only selects the finest materials from the industry’s leading material manufacturers.

Pres-On Foam Polystyrene Pressure Seals possess a wide range of properties able to satisfy challenging packaging applications. Recommended for use with dry products.

  • Nutraceutical Products
  • Cosmetics
  • Vitamins
  • Spices
  • Pharmaceutical Products


  • Cap liner extraction / insertion
  • Cap / container evaluations
  • Custom design

Our foam pressure seal materials can be die-cut into custom shapes and sizes upon request.