Crc 1004789 Rtv Silicone Elastic Sealant 8 Oz White

Product Description

The CRC 1004789 is a white RTV silicone elastic sealant designed for sealing, gasketing, and insulating applications across automotive, electrical, and HVAC trades. Packaged in an 8 oz tube, it cures fully within 24 hours and maintains a flexible, durable seal across a wide operating temperature range of -76 degrees F to 356 degrees F. Technicians use it where movement, vibration, or thermal cycling would crack a rigid sealant. The food-safe formulation expands its use beyond general mechanical work into applications that require compliance with FDA standards for incidental food contact.

This sealant suits a broad range of professional applications including automotive gasket fabrication, electrical enclosure sealing, HVAC vent connections, wall joint sealing, and general insulating work. It performs reliably in both indoor and outdoor environments, making it a practical choice for service techs working across multiple trade categories. The 8 oz tube format is well suited for single-job use or small-volume repair work where a full cartridge is not needed.

Key Features

• RTV silicone formulation stays flexible after cure, resisting cracking from vibration and thermal expansion
• Wide operating range from -76 degrees F to 356 degrees F suits high-heat and sub-freezing environments
• Full cure in 24 hours under standard conditions
• Food-safe rating meets 21 CFR 177.2600 for applications requiring FDA compliance
• Meets multiple military and commercial standards including ASTM C-920 and MIL-A-46106B Type I
• Indoor and outdoor rated for versatile field use

Compatibility

Designed for use on automotive components, electrical enclosures, gasket surfaces, insulating joints, vents, and wall joints where a flexible RTV silicone seal is required.

Installation Notes

Clean and dry all mating surfaces before application to ensure full adhesion. Apply sealant in a continuous bead and allow 24 hours of full cure time before pressurizing or returning the assembly to service. Electrical techs should confirm the sealant is fully cured before energizing any sealed enclosure. Work in a ventilated area during application, as uncured RTV silicone releases acetic acid vapors.