Rust-Oleum High Heat Primer Spray – Dark Gray

Give your metal components the high-temperature protection they deserve. Rust-Oleum’s High Heat Primer bonds tightly to bare metal and delivers a flat, matte base coat that prevents rust and ensures superior adhesion for topcoats. Formulated for automotive engines, mufflers, head pipes, engine blocks and other metal surfaces exposed to intermittent heat up to 2000°F (1093°C), this 12-ounce spray primer covers up to 12 sq ft, dries to the touch in just 30 minutes and can be top-coated in one hour.

Built on Rust-Oleum’s legendary Stops Rust oil-based formula, this primer creates a rust-resistant barrier that’s ideal for both interior and exterior metal prep. The any-angle spray comfort tip lets you coat even hard-to-reach spots—right side up, upside down or anywhere in between—for fast, professional results.

Key Features

• Heat resistance up to 2000°F (1093°C)
• Stops Rust formula for long-term corrosion protection
• Covers up to 12 sq ft per can
• Touch-dry in 30 minutes; topcoat in 1 hour
• Flat/matte finish promotes superior topcoat adhesion
• Any-angle spray technology with comfort tip
• Ideal for automotive engines, mufflers, head pipes and more

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.