Introduction
The Permatex High-Temp Red RTV Silicone Gasket Maker is engineered for high-temperature applications and heavy-duty use, such as towing. This product is designed to replace most pre-cut gaskets by forming reliable 'formed-in-place' gaskets that resist cracking, shrinking, and migrating due to thermal cycling. It can also coat pre-cut gaskets to enhance their reliability. The formulation resists common automotive and shop fluids and operates effectively within a temperature range of -65°F to 650°F intermittently. This first-generation gasket maker (1970-1980) is OEM specified and offers superior oil resistance, excellent torque retention, and sensor-safe properties, making it suitable for modern engine sensors and materials like aluminum, bi-metal alloys, and high-tech plastics.
Product Features
- Formulated for high-temperature applications or heavy-duty use.
- Replaces almost any cut gasket and coats pre-cut gaskets to increase reliability.
- Creates reliable 'formed-in-place' gaskets that resist cracking, shrinking, and migrating.
- Effective temperature range of -65°F to 650°F (intermittent).

Image: Permatex 81160 High-Temp Red RTV Silicone Gasket tube, 3 oz.
Directions for Use
For optimal results, follow these steps carefully:
- Preparation: Ensure all surfaces are clean and dry before application.
- Application: Apply a continuous bead of silicone, 1/16" to 1/4" (2 to 6mm) thick, to one surface, surrounding all bolt holes. Assemble parts immediately while the silicone is still wet. Finger tighten until the material begins to squeeze out around the flange.
- Curing: Allow 1 hour for the material to set before tightening to torque specifications.
- Full Cure: Allow 24 hours for the gasket to fully cure before filling with fluids or returning the assembly to service.
- Cleanup: Replace the cap after use to prevent drying.
Note: This product is not recommended for use on head gaskets or parts that will come into contact with gasoline.

Image: Applying Permatex 81160 High-Temp Red RTV Silicone Gasket to an engine component.

Image: Detailed view of Permatex gasket maker application.
Safety Information
WARNING: Contains petroleum distillates and amorphous silica. Always read and understand the Safety Data Sheet (SDS) before use.
- Contact: Avoid contact with eyes and skin. In case of contact, flush thoroughly with water.
- Inhalation: Use in a well-ventilated area. Avoid breathing vapors.
- Ingestion: Do not ingest. If swallowed, do not induce vomiting. Seek immediate medical attention.
- Children: Keep out of the reach of children.

Image: Back of product packaging showing safety warnings and instructions.
Storage and Disposal
Storage: Keep the container tightly closed and store in a well-ventilated place.
Disposal: Dispose of content and container in accordance with local, state, and federal regulations.
Troubleshooting
No specific troubleshooting steps are provided in the available product information. For issues not covered in the directions, please contact Permatex customer support.
Specifications
| Attribute | Value |
|---|---|
| Brand | Permatex |
| Model Number | 81160 |
| Item Weight | 3.21 ounces |
| Product Dimensions | 1.25 x 3.81 x 8 inches |
| Temperature Range | -65°F to 650°F (intermittent) |
| Manufacturer Part Number | 81160 |
| OEM Part Number | 81160 |
Warranty and Support
Specific warranty information for the Permatex 81160 High-Temp Red RTV Silicone Gasket is not provided in the available product data. For detailed warranty terms, technical support, or further assistance, please visit the official Permatex website or contact their customer service department directly.
You can find more information and contact details on the Permatex Brand Store.



