Permatex 85420 Permashield Fuel Resistant Gasket Dressing & Sealant User Manual

1. Introduction

The Permatex 85420 PermaShield Fuel Resistant Gasket Dressing and Sealant is a specialized polyester urethane sealant engineered for robust resistance against gasoline and a wide array of automotive fluids. This product is suitable for various applications, including oil pans, axle assemblies, and fuel injectors. It maintains flexibility even under high temperatures, with an operational range of -60°F to 500°F (-51°C to 260°C), facilitating repeated disassembly and reassembly in metal-to-metal applications. Its versatile and vibration-resistant formula offers unlimited assembly time and remains tacky for repeated use without reapplication. It also effectively seals surface imperfections.

Image 1.1: Permatex 85420 Permashield Fuel Resistant Gasket Dressing & Sealant in its retail packaging.

2. Safety Information

DANGER: EXTREMELY FLAMMABLE. VAPOR HARMFUL. EYE AND SKIN IRRITANT. Read all cautions carefully before use.

This product contains Acetone, Silica amorphous, and Ethanol.

Potential Hazards:

• Causes serious eye irritation.
• May cause allergy or asthma symptoms or breathing difficulties if inhaled.
• May cause an allergic skin reaction.
• May cause cancer.
• May damage fertility or the unborn child.
• May cause respiratory irritation.
• May cause drowsiness or dizziness.
• May cause damage to organs through prolonged or repeated exposure.
• Highly flammable liquid and vapor.

Precautionary Statements - Prevention:

• Obtain special instructions before use. Do not handle until all safety precautions have been read and understood.
• Keep away from heat, sparks, open flames, and hot surfaces. No smoking.
• Keep container tightly closed.
• Ground/bond container and receiving equipment.
• Use explosion-proof electrical/ventilating/lighting/equipment.
• Use only non-sparking tools.
• Take precautionary measures against static discharge.
• Keep cool.
• Do not breathe dust/fume/gas/mist/vapors/spray.
• Use only outdoors or in a well-ventilated area.
• Wash skin thoroughly after handling.
• Contaminated work clothing should not be allowed out of the workplace.
• Wear protective gloves, protective clothing, eye protection, and face protection.

Precautionary Statements - Response:

• IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention.
• IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. If skin irritation or rash occurs: Get medical advice/attention. Wash contaminated clothing before reuse.
• IF INHALED: Remove person to fresh air and keep comfortable for breathing. If experiencing respiratory symptoms: Call a POISON CENTER/doctor.
• IF exposed or concerned: Get medical advice/attention.
• IF SWALLOWED: Immediately call a POISON CENTER/doctor. Do NOT induce vomiting.
• In case of fire: Use dry chemical, foam, or carbon dioxide to extinguish.

Precautionary Statements - Storage & Disposal:

• Store in a well-ventilated place. Keep container tightly closed. Store locked up.
• Dispose of contents/container to an approved waste disposal plant.
• Keep out of the reach of children.

Image 2.1: Back of product packaging detailing safety warnings and application instructions.

3. Product Overview

Permatex PermaShield is a high-performance polyester urethane sealant designed for demanding automotive and industrial applications. Its unique formulation provides exceptional resistance to fuel and other automotive fluids, ensuring a reliable seal in critical areas. The sealant's ability to remain flexible across a wide temperature range makes it ideal for applications requiring repeated servicing.

Key Features:

• Fuel Resistant: Provides strong resistance to gasoline and all other automotive fluids.
• Temperature Stability: Remains flexible from -60°F to 500°F (-51°C to 260°C).
• Reusable Gaskets: Allows for repeated disassembly and reassembly in metal-to-metal applications.
• Vibration Resistant: Maintains integrity under dynamic conditions.
• Unlimited Assembly Time: Stays tacky, allowing for flexible assembly schedules without reapplication.
• Seals Imperfections: Fills and seals minor surface irregularities.

4. Setup and Preparation

Proper surface preparation is crucial for optimal performance of the Permatex PermaShield sealant. Follow these steps to ensure a clean and ready surface for application.

Required Materials:

• Permatex 85420 PermaShield Fuel Resistant Gasket Dressing & Sealant
• Clean cloths or rags
• Appropriate solvent (e.g., brake cleaner, acetone) for degreasing (ensure compatibility with surfaces)
• Safety gloves and eye protection

Preparation Steps:

1. Ensure all surfaces to be sealed are clean, dry, and completely free of any paint, dirt, grease, or old gasket material. Use a suitable solvent to thoroughly clean the surfaces if necessary, then allow them to dry completely.
2. Carefully pierce the top of the sealant tube using the back of the cap.

5. Operating and Application Instructions

Follow these instructions for effective application of the Permatex PermaShield sealant.

Application Procedure:

1. Apply a thin, even film or bead of the PermaShield product to both mating surfaces that will form the gasket seal.
2. Allow the applied film to dry simply, which permits the solvent to completely evaporate. This step is crucial for the sealant to achieve its optimal tacky state.
3. Once the solvent has evaporated and the sealant is tacky, assemble the components.
4. Tighten the assembly to the manufacturer's specified torque settings.
5. Re-check the torque after approximately 10 minutes to ensure proper seating and sealing.

Image 5.1: Application of Permatex PermaShield sealant directly onto a gasket.

Image 5.2: Application of Permatex PermaShield sealant to a metal component surface.

6. Maintenance

Proper storage and handling will ensure the longevity and effectiveness of your Permatex PermaShield sealant.

Storage:

• Store the product in a cool, dry, and well-ventilated area.
• Keep the container tightly closed when not in use to prevent solvent evaporation and premature drying.
• Store away from heat sources, sparks, and open flames.
• Keep out of reach of children.

Reapplication:

Due to its non-hardening and non-setting nature, PermaShield allows for repeated disassembly and reassembly without the need for reapplication, provided the original film remains intact and effective. If the gasket or sealed surfaces are damaged or the sealant film is compromised, reapplication following the instructions in Section 5 is recommended.

7. Troubleshooting

This section addresses common issues that may arise during the use of Permatex PermaShield sealant.

Common Issues and Solutions:

• Issue: Poor adhesion or leakage after assembly.
  Solution: This often indicates inadequate surface preparation. Ensure surfaces are completely clean, dry, and free of oil, grease, or old gasket material before application. Allow sufficient time for the solvent to evaporate from the applied film before assembly.
• Issue: Sealant appears too thick or difficult to apply.
  Solution: Ensure the product has been stored correctly in a cool environment. If the product has been exposed to air for an extended period, some solvent may have evaporated. Ensure the cap is tightly sealed after each use.
• Issue: Respiratory irritation during application.
  Solution: This product contains volatile organic compounds. Always use in a well-ventilated area or outdoors. Wear appropriate respiratory protection if ventilation is insufficient. Refer to Section 2 for full safety precautions.
• Issue: Sealant does not remain tacky for repeated use.
  Solution: The product is designed to remain tacky. If it hardens or loses tackiness, it may have been exposed to air or extreme temperatures. Ensure proper storage and that the container is sealed.

8. Specifications

9. Warranty and Support

For specific warranty information regarding the Permatex 85420 PermaShield Fuel Resistant Gasket Dressing & Sealant, please refer to the product packaging or contact Permatex customer service directly. Permatex stands by the quality of its products and provides support for any inquiries or concerns.

For further assistance, please visit the official Permatex website or contact their customer support channels.

Permatex Official Website: www.permatex.com