CHT Group QSil 217 Transparent Silicone Encapsulant

Description

QSil 217 is a two-part transparent liquid silicone elastomer for potting and encapsulating parts that need flow around details, electrical insulation, and shock resistance. CHT product information lists a convenient 1:1 mix ratio, solvent-free formulation, and cure at room or elevated temperature.

QSil 217 Benefits

• Transparent, colorless silicone is useful where visibility through the encapsulant matters.
• Low viscosity helps the mixed material flow around complex parts and small component spaces.
• 1:1 mix ratio supports hand mixing and automated dispensing equipment.
• Solvent-free chemistry fits electronics and lighting work that needs a clean cured material.
• Silicone composition provides hydrolytic and reversion resistance after cure.

This material is a good candidate when the job needs a clear elastomeric potting compound instead of a rigid epoxy. It can protect parts from vibration and handling stress while keeping sensitive assemblies easier to inspect.

Where QSil 217 Fits

• Electronics potting where transparent encapsulation is helpful.
• LED and optical assemblies that need a clear silicone around components.
• Complex parts where low viscosity can reduce voids around details.
• Shock-sensitive assemblies that need elastomeric support.
• Production cells using 1:1 dispensing equipment for silicone systems.

Surface Preparation and Use

Parts should be clean, dry, and free of oil, dust, flux residue, release agents, and moisture before encapsulation. Meter or weigh the two components accurately, then mix until the blend is uniform. Avoid whipping air into the material when the finished part needs high clarity or low void content.

Use fixtures, dams, or molds that are compatible with addition-cure silicone chemistry. Confirm cure time, temperature, working life, and any primer requirement with the current technical data before building production parts.

Technical Details and Documentation

CHT describes this grade as a two-part transparent liquid silicone elastomer with a 1:1 ratio, no solvents, low viscosity flow, electrical insulation, shock resistance, and room or heat cure. Review current manufacturer resources from CHT Group before setting the potting process.

Ordering Help

For related silicone encapsulants and potting compounds, browse Chemical Concepts encapsulants and potting compounds. For help matching clarity, mix ratio, cure schedule, and dispensing method, call (800) 220-1966 or email [email protected].