Unisil is Contamac’s latest silicone hydrogel material, developed specifically to add greater versatility to your soft contact lens portfolio via its finely-tuned and balanced blend of monomers. Unisil’s unique polymer matrix provides outstanding surface wettability, visual acuity, and a higher Dk than conventional hydrogels to improve corneal health. The result is a material offering superior levels of stability and reproducibility. Unisil also has a Class II UV blocker as standard to satisfy the demands of daily wear and daily life.

Unisil is dimensionally stable making it ideal for a wide range of multi-pack modalities.

Unisil technical information

Please Note: Regulatory requirements and standards vary from country to country, and are constantly evolving. As a global company, we want to be sure we provide you with detailed technical information, specific to your market, where appropriate, rather than using the condensed and simplified technical information on the website. If you need to use technical data for quality paperwork, or for a regulatory submission, please contact your account manager to obtain this precise and detailed information to support your regulatory requirements, we will be happy to help.

Material characteristics

Oxygen Permeability (ISO at 35°C barrers)50
Water Content62%
Refractive index at 20°C dry1.511
Refractive index at 20°C hydrated1.398
Tensile Strength0.88
Elongation to Break>200%
Shore D Hardness86

Manufacturing consumables

  • Low melt blocking wax
  • Contapol 2 polishing compound
  • Cotton polishing cloth
  • Delrin polishing cups
  • Delrin polishing sponge


  • Tweezers
  • Glass vials
  • Stoppers
  • Aluminium top seals
  • Flip tear up seals
  • Shrink-wrap sleeves
  • Net vial sleeves
  • DMV soft lens remover
  • Lens catch mat


Your Marketing Permissions

Contamac will use the information you provide to share consented marketing efforts. Please let us know which marketing efforts you wish to receive from us:

You can change your mind at any time by clicking the unsubscribe link in the footer of any email you receive from us, or by contacting us at comms@contamac.co.uk. We will treat your information with the highest level of respect. For more information about our privacy policy please visit our website. By clicking below, you agree that we may process your information in accordance with these terms.