Permatex 25228
Permatex The Right Stuff 90 Minute Black Gasket Maker Instruction Manual
Model: 25228
Product Overview
Permatex The Right Stuff 90 Minute Black Gasket Maker is a superior silicone product designed to outperform conventional pre-cut gaskets. It offers a strong and fast high-flex silicone seal with excellent durability, allowing for a record return to service time of just 90 minutes.
- Strong and Fast Seal: Cures in just 90 minutes for quick return to service.
- Replaces Precut Gaskets: Formulated to create custom, durable gaskets.
- Blowout Resistant: Provides a reliable seal under demanding conditions.
- High Flexibility & Oil Resistance: Ideal for applications exposed to oil and vibration.
- Sensor Safe RTV Silicone: Safe for use with automotive sensors.
- Ideal Applications: Valve Covers, Intake Manifolds, Coolant Flanges, Oil Pans, Timing Covers, Heavy-Duty Truck and Fleet.
- Convenient Packaging: Includes an additional application nozzle for multiple use convenience.

Image: Front packaging of Permatex The Right Stuff 90 Minute Black Gasket Maker.
Safety Information
CAUTION: MAY IRRITATE EYES. MAY IRRITATE SKIN. Do not get in eyes. Do not get on skin or clothing. Do not breathe fumes. Keep out of reach of children.
FIRST AID TREATMENT: Contains polydimethylsiloxane, calcium carbonate. If swallowed, call a Poison Control Centre or doctor immediately. Do not induce vomiting. If in eyes, rinse with water for 15 minutes. If on skin, rinse well with water.
NOTE: Not recommended for use on head gaskets or parts in contact with gasoline.

Image: Back packaging displaying safety warnings and usage directions.
Setup and Application
Proper preparation is crucial for optimal performance of the gasket maker.
- Surface Preparation: For best results, ensure all surfaces are clean and dry. Remove any old gasket material, oil, grease, or debris.
- Application: Cut the nozzle to the desired bead size. Apply a continuous bead of silicone, 2 to 6mm (1/16 to 1/4 inch) thick, to one surface, ensuring it surrounds all bolt holes.
- Assembly: Immediately assemble parts while the silicone is still wet. Finger tighten the fasteners until the material begins to squeeze out around the flange.

Image: Close-up of the gasket maker being applied to a component.
Operating Instructions
Follow these steps for proper curing and optimal performance:
- Initial Cure: Allow the gasket maker to dry for one hour then tighten to torque specifications.
- Full Cure: Allow 24 hours for the gasket to fully cure before filling with fluids or returning the vehicle to service.
Video: Official Permatex video demonstrating the features and application of The Right Stuff 90 Minute Black Gasket Maker.
Maintenance
To ensure the longevity of your Permatex Gasket Maker and future uses:
- Storage: Replace the cap tightly after each use to prevent the silicone from drying out. Store in a cool, dry place.
- Nozzle Care: If the nozzle becomes clogged, clear it with a thin wire or by cutting a fresh opening.
Troubleshooting
If you encounter issues with the gasket maker, consider the following:
- Leakage after application: Ensure surfaces were thoroughly clean and dry before application. Verify that the bead was continuous and surrounded all bolt holes. Allow sufficient cure time (24 hours) before exposing to fluids or stress.
- Material not curing: Check the product's expiration date. Ensure proper ventilation during application as moisture from the air is necessary for curing.
- Difficulty applying: If the material is too thick, ensure it has been stored at room temperature. Warming the tube slightly (e.g., in warm water) can improve flow.
Specifications
| Brand | Permatex |
| Model Number | 25228 |
| Product Dimensions | 1.5 x 3.81 x 8 inches |
| Item Weight | 3.68 ounces |
| Style | The Right Stuff 90 Min |
| Country of Origin | USA |
| Material (Tube) | Plastic |
Warranty and Support
For warranty information or technical support, please contact Permatex directly. Visit the official Permatex website or refer to the contact information provided on the product packaging for assistance.
Permatex is a leading manufacturer and distributor of premium chemical products to the automotive maintenance and repair, home and hardware markets. Product categories include gasket makers, sealants, hand cleaners, threadlockers, adhesives, cleaners, repair kits, and lubricants.
Official Permatex Website: www.permatex.com