CHT Group QSil 550SB Self-Priming Silicone Potting Material, 4 Lb Kit

Description

QSil 550SB is a two-component silicone potting material for electronics that need environmental protection, thermal conductivity, low modulus, and repairable cured material. The 4 lb kit gives engineering and maintenance teams a smaller package for qualification, repair, and controlled production work.

QSil 550SB Benefits

• 100 percent silicone solids formulation contains no solvents in the published technical data.
• Thermally conductive cured silicone helps move heat away from potted components.
• Low modulus and good elongation help protect assemblies from vibration and thermal movement.
• Self-priming behavior can reduce separate primer steps when the substrate and process qualify.
• Repairable cured elastomer supports service situations where rigid potting would be difficult to remove.

Use this grade when a rigid encapsulant is not the right fit and the assembly needs a silicone system that can handle heat, movement, and service access. Confirm cure schedule and adhesion on the real substrate before release.

QSil 550SB Applications

• Potting circuit boards, sensors, power modules, and electronic assemblies.
• Protecting components from moisture, vibration, and mechanical shock.
• Encapsulating parts that need a thermally conductive silicone path.
• Repair or qualification batches before moving to larger potting packages.
• Assemblies where a heat-cure silicone fits the production process.

Preparation And Mixing Notes

Bring both components to the recommended processing condition and mix thoroughly before use. Use clean containers, accurate ratio control, and careful scraping of the cup sides and bottom. Degas when voids could affect electrical, thermal, or visual inspection requirements.

Apply only to clean, dry parts. Remove dust, oils, flux residue, release agents, and moisture before potting. Validate cure, adhesion, thermal performance, and repair method on a representative assembly before filling production units.

Technical Details And Documentation

CHT technical data describes this material as a 100 percent silicone solids elastomer for electronic potting applications, with hard thermally conductive cured properties, low modulus, good elongation, primerless adhesion, and heat cure requirements. Review current manufacturer resources from CHT Group before production use.

Ordering Help

For related electronic potting materials, browse Chemical Concepts encapsulants and potting compounds. For help choosing package size, cure profile, or dispensing method, call (800) 220-1966 or email [email protected].