POR-15 49216 Fuel Tank Sealer – 8 oz

POR-15 Fuel Tank Sealer is a professional-grade, solvent-resistant sealer designed to permanently protect fuel tanks from rust, leaks, and corrosion. Unlike temporary fixes or liners that peel over time, this advanced formula creates a tough, non-porous barrier that bonds to metal surfaces, sealing pinholes and preventing future fuel system failures. Perfect for automotive, motorcycle, marine, and industrial fuel tanks.

Features — Explained

Stops rust & corrosion: Seals existing rust inside the tank and prevents new corrosion, extending the life of your fuel system.

Seals pinholes & seams: Permanently bonds to metal and seals leaks caused by age, rust, or wear at seams, joints, and pinholes.

Resistant to fuels & additives: Stands up to modern ethanol-blended fuels, diesel, and common additives without softening or breaking down.

Permanent non-porous barrier: Creates a rock-hard protective lining that will not crack, peel, or flake with time or vibration.

Trusted restoration solution: Widely used in automotive and motorcycle restoration projects for reliable long-term results.

Specifications & Capacity

  • Brand: POR-15
  • Model: 49216 Fuel Tank Sealer
  • Type: Internal Fuel Tank Sealer
  • Color: Gray
  • Size: 8 fl oz (Half Pint)

Application Capacity

One 8 oz can is typically sufficient to coat and seal up to a 5-gallon (19 L) tank. For larger tanks, use additional quantities as recommended by POR-15.

Usage Method — Step by Step

  1. Drain & clean tank: Remove old fuel and flush tank thoroughly. Use POR-15 Cleaner Degreaser to eliminate fuel residues and oil.
  2. Remove rust & prep metal: Apply POR-15 Metal Prep to dissolve rust and etch the surface for better adhesion. Rinse and dry completely.
  3. Seal application: Pour the required amount of Fuel Tank Sealer into the tank. Slowly rotate the tank in all directions to ensure every surface, seam, and corner is coated evenly.
  4. Drain excess: Carefully pour out any extra sealer. Do not allow puddling, as it may affect curing.
  5. Dry & cure: Let the tank sit open in a well-ventilated area for 96 hours minimum before adding fuel back. Curing time depends on temperature and humidity.

Pro Tips & Best Practices

  • Do not thin or dilute the sealer.
  • Ensure tank is completely dry before applying — moisture interferes with adhesion.
  • Work slowly when rotating the tank to prevent missed spots.
  • Wear gloves and eye protection — sealer bonds strongly to skin and surfaces.

Safety & Storage

Use in a well-ventilated area. Avoid contact with skin and eyes. Keep away from sparks, flames, and heat sources. Store in a cool, dry place with the lid tightly closed. Keep out of reach of children. Dispose of rags and excess material in compliance with local regulations.

Quick FAQ

Will it seal plastic tanks? — No. POR-15 Fuel Tank Sealer is designed for metal tanks only.

Can I use with ethanol fuel? — Yes, it resists modern fuels including ethanol blends.

Order Handling & Return Policy

  • Handling Time: Orders are usually processed and shipped within 1 business day. In rare cases, handling may take up to 2 business days.
  • Returns: Accepted within 30 days of delivery.
  • Important: Returns will not be accepted if the item seal is broken, packaging is damaged, or the product has been used.