Diversitech 7-4300 High Temp Red Silicone Sealant Rtv

Product Description

The DIVERSITECH 7-4300 is a high-temperature red RTV silicone sealant formulated for demanding HVAC, plumbing, and mechanical applications where standard sealants fail. It comes in a 10.1 oz cartridge and dispenses as a one-part, non-slumping paste that cures to a tough, rubbery solid at room temperature. Rated for continuous operation from -85 degrees F to 500 degrees F, with intermittent exposure tolerance up to 600 degrees F, this sealant handles the thermal cycling common in furnace flue connections, exhaust manifolds, and high-heat ductwork joints. Tack-free cure time is 15 minutes, with full cure achieved in 24 hours.

This sealant is well-suited for residential and light commercial HVAC installations, gas appliance service, and plumbing applications where high-heat resistance is required. Common applications include sealing flue pipe joints, gasket repairs on heating equipment, and connections on hot water systems or heat exchangers. The 10.1 oz cartridge is compatible with standard caulk guns used by HVAC technicians and service plumbers in the field.

Key Features

• Continuous service rating from -85 degrees F to 500 degrees F
• Intermittent exposure rated to 600 degrees F
• One-part, non-slumping paste — no mixing required
• Tack-free in 15 minutes; fully cured in 24 hours
• 10.1 oz cartridge fits standard caulk guns
• Cures to a flexible, rubbery solid at room temperature

Compatibility

Designed as a general-purpose high-temperature RTV silicone sealant suitable for use in residential and commercial HVAC, heating equipment, and plumbing service applications where elevated heat resistance is required.

Installation Notes

Installation is typically performed by licensed HVAC technicians or plumbers. Always shut down and de-energize the appliance or system before applying sealant, and allow surfaces to cool to a safe handling temperature. Clean and dry mating surfaces thoroughly before application to ensure proper adhesion. Allow a full 24-hour cure before returning the system to service or exposing the joint to heat.

Technical Specifications

• Net Weight / Volume: 10.1 oz cartridge
• Continuous Temperature Range: -85 degrees F to 500 degrees F
• Intermittent Temperature Limit: 600 degrees F
• Tack-Free Cure Time: 15 minutes
• Full Cure Time: 24 hours
• Form: One-part non-slumping paste
• Color: Red
• UPC: 0095247415441

Standard Information

• Brand: DIVERSITECH
• Manufacturer Part Number: 7-4300