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About Polytec PT Optical Adhesives & Encapsulants

Polytec PT offers a range of high performance optical adhesives for use in optical and medical applications. The materials are either optically clear or black opaque.

Features & Benefits

  • Products with high clarity and excellent optical transmission
  • Medically approved – ISO 10993
  • Flexible epoxy systems
  • Resistance to autoclaving and steam sterilisation
  • Process convenient packaging, including twin-packs and premixed and frozen syringes
  • Application specific formulations


  • Medical device manufacture – USP Class VI
  • Opto-electronics
  • Hybrid microelectronics
  • Optics
  • Fibre optics
  • Bonding
  • Encapsulation
  • Impregnation
  • Underfill

Selector Guide

Part number Features Applications
Polytec EP 610-2 · Number of components: 2
· Mix ratio by weight: 100:50
· Temperature range: -55 to +150°C
· Consistency: flowable liquid
· Colour: translucent
· Shore hardness: A65
Polytec EP 610-2 is used for stress-free bonding of large optical components with different CTEs. This material is suggested for applications in the optics, fibre optics, opto-electronics, medical and semiconductor technology.

EP 610-1 is also available in a thixotropic and non-flowing version. All are available pre-mixed, frozen and bubble-free.

Polytec EP 655 · Number of components: 2
· Mix ratio by weight: 100:10
· Temperature range: -55 to +220°C
· Consistency: flowable liquid
· Colour: yellow/amber
· Shore hardness: D80
Polytec EP 655 provides extreme temperature, chemical, electrical and moisture resistance. It was designed for medical, semiconductor, hybrid, piezo and fibre optic applications. It has excellent adhesion to glass, metal, ceramics, ferrite and most plastics. Recommended as an adhesive, impregnation and encapsulation. Its tough-elastic properties allow assemblies and potting of substrates with dissimilar coefficients of thermal expansion. Polytec EP 655 has passed more than 100 autoclave steam cycles.
Polytec EP 660 · Number of components: 2
· Mix ratio by weight: 100:17
· Temperature range: -55 to +240°C
· Consistency: flowable liquid
· Colour: light yellow
· Shore hardness: D85
Polytec EP 660 is a 100% solid, two-component, low viscosity epoxy impregnation and coating material. It has an excellent chemical and moisture resistance and can withstand operating temperature up to 300°C. It is recommended as sealant and impregnation for all soaking surfaces like ceramic, wood, plastics, high temperature fabric and powder as well as fibre bundles. A typical application is the impregnation and sealing of the magnesium oxide filler in tubular heaters / heating elements.

Other Information

Technical Guide - Adhesive Problem? What's the Cure? Adhesive Problem? What’s the Cure?

A guide to adhesive bonding, considering structural bonding and the criteria involved for successful assembly.

All Downloads

Filename Size Download
Polytec PT Epoxy Resin Adhesives and Potting Compounds Selector Guide 0.15MB Download
Polytec Adhesives Selector Guide 1.17MB Download
Adhesive Problem? Whats the Cure? 0.38MB Download

Ordering Information

orange_phone01865 842842 orange_email  orders@intertronics.co.uk

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  • Last updated: November 2022
  • Version: 4.1

Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.