Chemlease Zyvax Sealer GP (Solvent-Based Mold Sealer)

Zyvax Sealer GP Solvent-Based Mold Sealer

Zyvax® Sealer GP is a high-performance solvent-based mold sealer designed to condition and protect mold and tooling surfaces used in fiberglass, FRP and composite manufacturing. Sealer GP forms a clear, flexible protective film with strong adhesion to the mold substrate, helping create a uniform surface before the application of a semi-permanent mold release agent.

For composite manufacturers, boat builders, fiberglass fabricators and mold shops, properly sealing the mold is an important step in achieving consistent releases and protecting valuable tooling. Zyvax Sealer GP helps seal microscopic porosity and surface irregularities that can contribute to resin bonding, difficult releases and premature mold wear.

What Is Zyvax Sealer GP Used For?

Zyvax Sealer GP is used as a mold surface conditioner and sealer before applying a mold release agent. It is particularly useful on new molds, freshly polished tooling, repaired mold surfaces and porous substrates where a consistent sealed surface is required.

The sealer helps treat both the chemical and physical bonding sites found on raw mold surfaces while creating the foundation needed for a high-performance mold release system.

Key Benefits of Zyvax Sealer GP

• Professional solvent-based mold sealer for composite and fiberglass tooling
• Forms a clear, flexible protective film over the mold surface
• Helps seal micro-porosity in molds and tooling
• Helps reduce break-in time on new molds
• Creates a uniform surface over repaired or patched mold areas
• Helps extend the useful life of mold release coatings
• Retains mold detail and surface finish
• Helps protect mold surfaces from styrene exposure and oxidation
• Suitable for use with a wide range of mold release agents
• Designed for fiberglass, FRP and composite manufacturing applications

Ideal for Fiberglass and Composite Mold Preparation

Zyvax Sealer GP is an excellent choice for preparing molds used in fiberglass boat building, marine composites, FRP manufacturing, carbon fiber fabrication, tooling and industrial composite production. By conditioning and sealing the mold surface before release agent application, Sealer GP helps provide a more consistent foundation for repeated production cycles.

Typical applications include:

• Fiberglass and FRP molds
• Composite production molds
• Marine and boat-building tooling
• Carbon fiber molds
• New mold preparation
• Repaired or patched tooling
• Polished mold surfaces
• Production molds using semi-permanent release systems

How Zyvax Sealer GP Works

Raw or repaired mold surfaces can contain microscopic pores and irregularities that provide locations for resin to mechanically or chemically bond to the tooling surface. Zyvax Sealer GP conditions and seals these areas, creating a protective barrier between the mold substrate and the molding process.

Once properly applied and cured, the sealed surface provides a strong foundation for the selected Zyvax or compatible mold release agent. This can help improve mold preparation consistency while protecting the underlying tooling.

Zyvax Sealer GP Application

Before applying Zyvax Sealer GP, the mold should be properly cleaned and free of previous waxes, oils, residues and other surface contamination. Apply the sealer using a clean lint-free cloth or suitable applicator to a small section of the mold, then wipe the surface dry with a separate clean cloth while the material is still wet.

Allow the recommended cure time between coats. Multiple coats are typically used to fully condition and seal the mold surface, with additional coats potentially required for porous, repaired or heavily conditioned tooling. Always follow the current Zyvax/Chem-Trend Technical Data Sheet and Safety Data Sheet for complete preparation, application, curing, handling and safety instructions.

Why Use a Mold Sealer Before Mold Release?

A mold sealer and mold release agent perform different functions. The sealer conditions and protects the actual mold surface, while the release agent provides the release interface between the mold and the manufactured part. Using a properly matched sealer and release system can help improve consistency and extend the service life of valuable composite tooling.

Buy Zyvax Sealer GP for Composite and Fiberglass Tooling

Choose Zyvax Sealer GP solvent-based mold sealer for professional mold preparation in fiberglass, marine, FRP and composite manufacturing applications. It is designed to seal and condition mold surfaces, protect tooling and provide the foundation required for effective semi-permanent mold release systems.

Product: Zyvax® Sealer GP
Product Type: Solvent-Based Mold Sealer / Mold Surface Conditioner
Applications: Fiberglass, FRP, composite molds, marine tooling and industrial composite manufacturing
Manufacturer: Zyvax / Chem-Trend