Description
QSil Primer #7 is a one-component, solvent-based primer used to improve silicone adhesion on non-porous substrates before potting, gasketing, sealing, or encapsulation. This pint pack is a good fit for electronics, sensor, and assembly work where silicone needs a dependable bond to metal, glass, ceramics, and other smooth surfaces.
QSil Primer #7 Benefits
- Reactive silane chemistry leaves a thin adhesion-promoting layer after the carrier solvent flashes off.
- Designed for both condensation-cure and addition-cure silicone elastomers used in production and repair work.
- Low-viscosity liquid can be wiped, brushed, dipped, or sprayed depending on the part geometry.
- Moisture-cure behavior helps the primer develop an effective bonding layer at normal shop humidity.
- Pint packaging works well for bench jobs, pilot runs, and lower-volume electronics assembly.
Use it when bare substrate adhesion is inconsistent or when a silicone system needs extra help on smooth, non-porous surfaces. The manufacturer notes that surfaces should be dry and free of grease, oil, dust, and release agents before application, with solvent degreasing recommended for non-porous materials.
Common Applications
- Priming metal housings before silicone potting or encapsulation.
- Preparing glass and ceramic parts for sensor, LED, and electronics assembly.
- Supporting silicone adhesion in gasketing and environmental sealing work.
- Coating mixed-material assemblies where silicone must hold to rigid, smooth surfaces.
QSil Primer #7 Technical Details
- Solids content: 5.7%.
- Specific gravity: 0.72.
- Tack-free time: about 30 minutes at 23 C and 73 F.
- Flash point: -13 C.
- Shelf life: 24 months when stored below 38 C and 100 F.
- Typical cured film thickness ranges from a few hundred nanometers to about 12 microns, depending on substrate and application method.
- Relative humidity above 40% supports cure of the active ingredients.
For related surface prep products, see our primers and accelerators category. Review the manufacturer technical data sheet for handling and process details at CHT QSil Primer #7 TDS.
For help matching this primer to a silicone system or substrate, call (800) 220-1966 or email [email protected].
Reviews
There are no reviews yet.