Description
CHT USA primer No. 5 is a clear silicone adhesion primer in a 4 oz bottle for small-batch bonding, repair, lab, and production touch-up work. It prepares compatible non-porous surfaces before CHT silicone sealants and elastomers, helping the cured silicone bond to the surface instead of releasing under flex or handling.
CHT USA Primer For Small Bonding Jobs
The 4 oz bottle is practical when a shop needs primer at the bench without opening a gallon or pail. Use it for short silicone bond lines, gasket repairs, test panels, qualification samples, or low-volume assemblies where surface prep matters but the work area is small. Clear primer is useful where visible tint would be distracting on the finished part or where the operator is working on light-colored substrates.
CHT USA Primer Specifications
| Property | Value |
|---|---|
| SKU | QTM-PRIMER#5-4OZ |
| Product | CHT Primer No. 5 |
| Format | 4 oz bottle |
| Appearance | Clear liquid |
| Use | Primer for silicone bonding and sealing |
| Application | Thin coat on clean, dry surfaces |
Because the bottle is small, it also works well for qualification work before a larger primer purchase. Mark the substrate, silicone, primer, and dry time on each test coupon so the shop can repeat the combination that passes peel or handling checks. Keep the bottle closed between uses and use a clean applicator each time to avoid dragging cured silicone or shop debris back into the primer. Clean the surface first, remove dust and oil, apply a thin primer film, and allow the solvent to flash before adding silicone. Test new substrate combinations before production release because primers, elastomers, and surface finishes can interact differently. Browse related primers and accelerators for larger CHT primer sizes and other surface-prep options. For manufacturer context, visit CHT Group.
Need Help?
Need help checking whether Primer No. 5 or another CHT primer fits your substrate? Call (800) 220-1966 or email [email protected].
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