Primer Rittal SZ 2440.735 base paint primer, ready-mixed, 150 L, for metal

Rittal SZ 2440.735 is a ready-mixed base paint primer supplied in a 150 L container and formulated primarily for metal surfaces. It is intended as a preparatory coating to improve adhesion of subsequent topcoats and to provide initial corrosion protection for industrial enclosures, panels, and metal fabrications. The product is suitable for use where a factory-applied primer layer is required prior to powder coating or wet-paint finishes and can also be used for touch-up and repair of powder-coated and wet-painted surfaces. The primer air-dries and is compatible with standard finishing processes.

Advantages

This primer offers consistent film build and uniform surface appearance across large metal panels, helping to ensure reliable adhesion of topcoats. Supplied ready-mixed in a bulk 150 L container, it reduces preparation time and mixing errors on site. The formulation provides initial corrosion resistance and is suitable for covering small defects during touch-up and repair of powder-coated or wet-painted finishes. Air-drying properties make it practical for workshop and factory environments without requiring forced drying equipment.

Suitable for

• Priming metal enclosures, cabinets, and panels before final coating
• Industrial and workshop use where large-volume primer supply is needed
• Touch-up and repair of powder-coated and wet-painted metal surfaces
• Applications requiring a ready-mixed base coat for consistent application

When it may not be suitable

This product is a base primer designed for metal substrates and may not be suitable as a final decorative topcoat. It is optimized for use prior to powder coating or wet-paint finishes rather than as an exposed finish for long-term weathering without a protective topcoat. Specific performance under extreme environmental conditions should be verified with technical data or field testing before use in highly corrosive or marine atmospheres.

Key specifications

• Type: Ready-mixed base paint primer for metal
• Volume: 150 L container
• Application method: Brush, spray, or conventional workshop application methods compatible with base primers
• Drying: Air-drying formulation
• Intended use: Primer for powder-coated and wet-painted surfaces, suitable for touch-up and repair
• Typical color family: Light grey (used as a neutral base for topcoats)

How to use

Prepare metal surfaces by removing rust, grease, oil, and loose material to ensure good adhesion. If required, perform mechanical or chemical cleaning and apply suitable pre-treatment according to substrate condition. Apply the primer by spray, brush, or recommended workshop application method to achieve an even film; follow recommended wet film thickness and allow the primer to air-dry fully before applying the chosen topcoat. For touch-up work, feather edges of the surrounding coating and apply only the required amount to blend with existing finish. Ensure adequate ventilation and follow safety guidance for handling and disposal.

What to consider before purchase

• Confirm compatibility of the primer with your chosen topcoat system (powder or wet paint)
• Verify required surface preparation and pre-treatment for your specific metal substrate
• Assess storage and handling capacity for a 150 L container in your facility
• Consider drying times and workshop logistics for air-drying primers

Usage recommendations

Use this ready-mixed primer as the preparatory layer for metal enclosures and panels to improve adhesion and corrosion protection before final coating. For best results, follow surface preparation instructions and allow full drying prior to topcoating; perform a compatibility test with the chosen finish in small areas when switching coating systems.