CHT Primer 3, 5 Gallon Pail (Blue Tint)

Description

CHT USA primer No. 3 is a silicone adhesion primer supplied here in a 5 gallon blue-tint pail for production use. It prepares non-porous substrates before CHT one-part and two-part RTV silicone sealants and elastomers, leaving an adhesion-promoting layer after the solvent carrier flashes off.

CHT USA Primer For Silicone Bonding

Primer No. 3 is used on metals, natural and synthetic rubber, polyester, nylon fabrics, and other non-porous surfaces that need stronger silicone adhesion than a direct sealant bead can provide. The blue tint helps operators see where primer has been applied across larger parts, which is useful on repeat production work, long joints, and fixtures where missed spots can create a weak bond line.

CHT USA Primer Specifications

For repeatable production, record the primer lot, substrate preparation, application method, and observed dry time in the work instruction. Recheck adhesion after any change to the metal finish, rubber formulation, nylon grade, cleaner, or silicone system.

The larger pail size suits teams that prime repeatedly through a shift or feed multiple workstations from one controlled container. Decant only what the job needs into a smaller working cup, then close the pail promptly to limit solvent loss and moisture exposure. Keep the primer step separated from sanding and dust-producing work so the treated surface stays clean before the silicone is applied. Apply sparingly to clean, dry surfaces with a lint-free cloth or brush, then allow the primer to dry before applying the silicone. Do not flood the surface, since excess primer can hurt adhesion instead of improving it. Browse related primers and accelerators for adjacent surface-prep products. For broader silicone material context, visit CHT Group.

Need Help?

Need help matching primer choice to a silicone and substrate? Call (800) 220-1966 or email [email protected].