QSil 553 Silicone Encapsulants

Adhesive Bonding Technology

2-Part Encapsulation and Potting Silicone - This is a 2-component, silicone elastomer system specially designed for electronic potting and encapsulation applications.

It offers good protection against chemicals, environmental contamination, mechanical shock, vibration and impact damage. It can be employed in areas where low flammability is a prerequisite. The cured elastomer can be repaired. The component parts have relatively low viscosities and are readily mixed either by hand or machine.

Key Features

  • 100% solids
  • no solvents
  • Long pot life
  • Low modulus and good elongation
  • UL94 V0 listed in file No. E205830


  • Electrical insulator, application cars e.g. encapsulation of ABS control unit.
Find out more
CHT Germany GmbH
Adhesive Bonding Technology

CHT further strengthened its position as a global producer of speciality silicone elastomers and rubber with the acquisition of the ICM silicones Group in 2017 which included Quantum Silicones, ACC Silicones, ICM Products, Amber Silicones and Treco SRL.


Adhesive and sealant systems
2-part systems
Size of application area
cm²-/cm³ range - component
m² range - workpiece
Curing mechanisms
room temperature curing
chemical curing
Pot life @ +20/23°C - Minimum / hours
1-2 h
(Mixed) viscosity
high viscosity
Packaging unit
colour and colour fastness
Sh-A 41 to 60
electrically insulating
deformation capability
≤ 300%
UL Underwriters Laboratories
UL 94 V-0 or 1
Ecological requirements
Microtechnology / encapsulation

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