Adheseal Primer 50A

For high-liability installations on non-porous substrates where maximum performance and longevity are required, Primer 50A is a fast-drying adhesion promoter. This clear alcohol solution is a single-pack, ready-to-use wipe that prepares difficult-to-bond surfaces for Polyurethane, MS, Silicone, and acrylic sealants and adhesives.

How it works

Primer 50A functions by evaporation, leaving a microscopic layer that enhances chemical bonding between the substrate and the adhesive or sealant. When applied very sparingly with a clean cloth, it dries in 15 seconds. If the primer does not dry almost immediately, it has been applied too heavily.

Where to use it

This primer is suitable for internal and external applications on non-porous substrates, including:

• Glass and porcelain
• Aluminium, powder coat, and metals (except Lead and Copper)
• Plastics, acrylic, and polycarbonate
• Fibreglass and rubber
• Stone and ceramic tiles
• Painted surfaces

It is commonly used in sign manufacturing, caravan assembly, marine fabrication, and automotive manufacturing and repair.

Numbers that matter

• 15 seconds: the final drying time when applied very sparingly to clean surfaces.
• +5°C to +40°C: the acceptable temperature range for both the air and substrate during application.
• 12 months: the product shelf life when stored in its original packaging between 10°C and 35°C.

Limitations

• Do not use on porous surfaces. If dispensed water absorbs into the substrate in under two minutes, the surface is porous; use Adheseal 2001 primer instead.
• Do not use if the liquid has become milky. A milky white appearance indicates the primer has absorbed water and must be disposed of.
• Do not use on lead or copper.
• Do not expose the primed surface to thermal, mechanical, or chemical influences before the product has dried completely.
• Use only in well-ventilated spaces.

Installation

All surfaces must be structurally sound, dry, clean, and free of dust, oils, grease, curing compounds, and other contaminants. Clean the surface with Adheseal IPA cleaner prior to priming. Wipe Primer 50A over the area very sparingly with a clean cloth.

For extremely non-porous surfaces, such as powder coat, lightly abrade the substrate and clean with Adheseal IPA cleaner before applying the primer to ensure a reliable bond. Carry out preliminary adhesion tests prior to full application. Wet tools and spills can be cleaned with IPA cleaner while the primer is still wet.