- $9.99
- $9.99
- Unit price
- per
Flex Seal Primer with Stain Blocker
Available in White.
Flex Seal Primer with Stain Blocker is a fast-drying, solvent-based alkyd aerosol primer that seals and primes interior surfaces before finish painting. Its powerful stain-blocking formula stops most heavy interior stains — including water, smoke, nicotine, tannin, ink, felt marker, and grease — while bonding to a wide range of surfaces including wood, drywall, plaster, masonry, metal, and paneling.
The cured primer is bright white and accepts latex or oil-based topcoats in as little as 1 hour, making it a fast, reliable solution for spot priming, stain isolation, and full-surface paint preparation.
• Powerful stain-blocking formula — blocks water, smoke, nicotine, tannin, ink, felt marker, and grease stains
• Fast-drying — tack-free in 15–30 minutes at 77°F/50% RH
• Topcoat-ready in 1 hour — accepts latex or oil-based architectural topcoats
• Bonds to wood, drywall, plaster, masonry, brick, concrete, metal, paneling & more
• White flat finish — professional-grade cure color
• For interior and exterior use
• Controlled aerosol spray — steady side-to-side application for even coverage
• Fast surface prep — prime and topcoat in the same day
• Scuff-sanding required only on glossy surfaces — adheres to most prepared surfaces directly
Use On
Wood, drywall, plaster, masonry, brick, concrete, metal, paneling, wallboard. Glossy surfaces should be scuff-sanded for maximum adhesion.
Not For Use On
Surfaces subject to immersion, prolonged water contact, or under foot applications.
WARNING: California Prop 65 Notice
Flex Seal Metal and Auto Primer
Available in Gray.
Flex Seal Metal & Auto Primer is a fast-drying, rust-inhibiting aerosol primer built on a nitrocellulose lacquer formula. Its wide fan spray lays down a smooth, even coat and delivers superior adhesion to bare and coated metal, while providing strong protection against rust and corrosion. Sandable in as little as 5 minutes and topcoat-ready in 10, it is suited to large surfaces like automotive body work, wrought iron, and garage doors, as well as everyday indoor projects like furniture, cabinets, and trim.
- Sandable in as little as 5 minutes — dramatically cuts wait time versus most primers
- Wide fan spray delivers gun-quality coverage without a spray gun
- Rust-inhibitive — strong protection against corrosion on bare metal
- Superior adhesion to bare and coated metal
- Heat resistant up to 250°F — suitable near engines and other heat-adjacent parts
- Indoor and outdoor performance
- Topcoat-ready in just 10 minutes
- 15 oz can — more product per can than the standard 12 oz competitive format
Use On
Bare and coated metal, wrought iron, garage doors, mailboxes and outdoor fixtures, furniture, cabinets, trim, doors and drywall, auto body panels, lawn and garden equipment, and tools.
Not For Use On
We recommend testing on galvanized metal in a small, inconspicuous area first, since adhesion can vary on zinc-coated surfaces. Not intended for surfaces that exceed 250°F in continuous service.
Stain-blocking Primer
- Always wear safety glasses, chemical-resistant gloves, and use in a well-ventilated area.
- Surface must be clean, dry, and free of dust, dirt, grease, oil, wax, and loose or peeling paint. Scrape and sand checked paint smooth. Wash if needed; rinse thoroughly and allow to dry completely.
- Shake can vigorously for 1 minute after the mixing ball rattles. Shake frequently during use.
- Hold can upright approximately 12 inches (30 cm) from the surface. Apply in a steady side-to-side sweeping motion, overlapping each pass by 50%.
- Apply 2–3 thin coats for best results. Do not over-apply in a single pass.
- Dries to touch in 15–30 minutes at 77°F and 50% Relative Humidity. Recoat in 1 hour. Compatible with latex or oil-based topcoats after 1 hour.
- After use, invert can and spray until only clear gas is released to clear the valve and prevent clogging.
- Clean fresh overspray immediately with mineral spirits or paint thinner.
Metal and Auto Primer
- Read entire directions and warnings before use. Gloves and eye protection are recommended.
- Surface must be clean and dry and free of dirt, grease, oil, and loose rust or scale.
- Shake can well before use. Apply only when temperature is between 50–90°F.
- Hold can approximately 6–12 inches from the surface. Spray using a steady back-and-forth motion, slightly overlapping each stroke. Keep can moving at all times.
- Dry to touch and sandable in 5 minutes. Ready for topcoat in 10 minutes. (Dry times depend on thickness applied.)
- Keep tip clean. Invert and clear tip before storing.
WARNING! If you scrape, sand or remove old paint, you may release lead dust. LEAD IS TOXIC. For more information, www.epa.gov/lead.
