CRC RTV Silicone Grey Aerosol Sealant for Sealing Bonding Waterproofing Ideal for HVAC Electrical Metalwork

CRC RTV Silicone GREY Aerosol 184g is the versatile, one-component sealant you can count on for sealing, bonding, protecting and waterproofing across a range of projects. Its room-temperature vulcanizing formula cures at ambient conditions, delivering flexible, durable joints that stand up to the demands of HVAC, electrical work, and metalworking.

• Select-a-Bead nozzle lets you dial in bead width from a fine fillet to a broad weatherproof seal, giving you exact control for every joint or gap.
• Sensor-safe, double piston pressurized can provides smooth, effortless dispensing from start to finish—no caulking gun required.
• Self-sealing plug minimizes blockages after use, making cleanup and re-use fast and reliable.
• Broad substrate adhesion adheres to metal, glass, silicone, natural fibre ceramic, and painted surfaces, reducing the need for primers in many applications.
• Wide temperature tolerance bonds and seals from -34°C to 232°C, performing under cold starts and hot environments alike.
• Excellent sag resistance stays put when applied overhead or on vertical joints, ideal for ductwork, fixtures, and exterior seams.
• Professional-grade versatility suited for sealing, bonding, and protection in HVAC, electrical, and metalworking tasks—a single product for multiple jobs.

Ideal use cases include sealing HVAC duct joints, bonding and waterproofing electrical enclosures, securing metalwork seams, and creating durable, flexible seals around glass, painted surfaces, or ceramic fixtures. The grey color blends with many substrates for a discreet finish, while the fast-room-temperature cure reduces downtime on busy projects.

Why chose CRC RTV Silicone GREY Aerosol 184g over alternatives? It combines precise bead control, reliable dispensing, and strong adhesion with the convenience of an aerosol format that eliminates the need for a caulking gun. It’s designed for professionals and serious DIYers who require dependable performance in challenging conditions—from damp basements to sun-exposed exteriors—without compromising on flexibility or durability.

Tips for best results: ensure surfaces are clean and dry, apply in a continuous bead for best adhesion, and allow adequate cure time at room temperature. For repairs or weatherproofing that endures, this grey RTV silicone delivers a lasting seal where it matters most.