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The CRC 1004793 is a red RTV silicone elastic sealant designed for high-temperature sealing and gasketing applications in automotive, electrical, and mechanical systems. Packaged in an 8 oz tube, it delivers flexible, durable seals that resist thermal cycling across an operating range of -80 degrees F to 500 degrees F. The fully cured sealant remains elastic, allowing it to absorb vibration and movement without cracking or pulling away from mating surfaces. Licensed technicians and maintenance professionals rely on this product for sealing vents, wall joints, gasket replacement, and insulating electrical connections where heat resistance is critical.
This sealant is suited for both residential and light commercial service work. Common applications include forming gaskets on engine components, sealing HVAC vents and penetrations, insulating electrical enclosures, and sealing wall joints where thermal expansion and contraction occur. The red color aids in identification after application, which is useful in crowded mechanical assemblies. Full cure is reached within 24 hours under standard conditions.
Designed for use in automotive, electrical, gasket, insulating, vent, and wall joint applications where an RTV silicone elastic sealant rated to 500 degrees F is required.
This product is typically applied by HVAC technicians, mechanics, and electricians during maintenance or new installation work. Clean and dry all mating surfaces before applying the sealant to ensure proper adhesion. Allow the full 24-hour cure time before exposing the joint to operating temperatures or system pressure. Follow applicable codes and manufacturer guidelines for sealant use in electrical or vented enclosures.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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