Rust-Oleum 4268 Heat-Resistant Primer – Industrial-Grade Protection Up to 425°C

Rust-Oleum 4268 Heat-Resistant Primer is a high-performance, anti-corrosive primer designed for metal surfaces exposed to extreme temperatures. With long-term heat resistance up to 425°C, this industrial-quality, high-build primer offers excellent flow and superior rust inhibition, significantly extending the life of the entire coating system. Ideal for heavy-duty environments requiring durable thermal and corrosion protection.

Key Features:

• Heat Resistant Up to 425°C – Withstands extreme dry heat conditions

• Anti-Corrosive Protection – High rust inhibitor content for long-term durability

• High Build Formula – Increases protection and system longevity

• Excellent Flow – Smooth application with professional finish

• Industrial Quality – Designed for heavy-duty use on metal surfaces

Application Details:

• Surface Type: Metal

• Heat Resistance: Continuous up to 425°C (dry heat)

• Function: Primer for high-temperature environments

Surface Preparation

Remove grease, oil and all other surface contaminations by alkaline- or high pressure
(steam) cleaning in combination with appropriate detergents. For optimum results remove rust, rust scale, mill scale and deteriorated coatings by abrasive blasting to Sa 2½ (ISO 8501-1 : 1988), blast profile max. 50 µm. The surface must be clean and dry during
application.

Technical Data

Density (g/cm³): 1,38
Gloss Level: Matt
Corrosion Class: C3 average protection
Solids content in volume: 44,4%
Heat Resistance: 425°C (continuous dry heat)

Directions for Use

To ensure homogeneity, coating materials should be thoroughly stirred prior to use.

Temperature of air, substrate and coating material between 5 and 35°C and relative
humidity below 85%. The substrate temperature must be at least 3°C above dew point.

Data Sheets

Rust-Oleum 4268 Heat-Resistant Primer TDS

Rust-Oleum 4268 Heat-Resistant Primer MSDS