• 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.

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.