Dow Corning 99179264 Rtv Silicone Sealant 10.1 Oz Silver

Product Description

The DOW CORNING 99179264 is an RTV silicone joint sealant packaged in a 10.1 oz cartridge, formulated for flexible, durable sealing across a wide thermal range. Part of the 733 series, this silver-colored sealant cures at room temperature and reaches a tack-free state in 15 minutes, with full cure achieved in 24 hours. It is rated for continuous service from -70 degrees F to 350 degrees F, making it suitable for applications that see repeated thermal cycling. HVAC technicians, plumbers, and general trade professionals use this sealant for sealing joints, seams, and penetrations where silicone adhesion and thermal flexibility are required.

This sealant is suited for both residential and commercial applications where a high-performance silicone sealant is needed on glass, metal, or plastic surfaces. It is commonly applied in HVAC ductwork, equipment housings, and plumbing penetration seals. The food-safe rating under 21 CFR 177.2600 also makes it appropriate for installations in food service and processing environments. The silver color blends with aluminum and metalwork common in mechanical systems.

Key Features

• RTV silicone formulation — cures at room temperature without external heat
• Tack-free in 15 minutes; full cure in 24 hours
• Operating temperature range: -70 degrees F to 350 degrees F
• Food safe per 21 CFR 177.2600
• Flame rating: UL 94 HB
• Adheres to glass, metal, and plastic substrates
• Silver color — blends with aluminum and metallic surfaces

Compatibility

Designed for use on glass, metal, and plastic surfaces. This sealant is part of the DOW CORNING 733 series (series part number 733-Aluminum) and is suitable for joint sealing applications in HVAC, plumbing, and food-service environments where RTV silicone adhesion is required.

Installation Notes

Application is performed using a standard caulk gun for 10.1 oz cartridges. Surfaces should be clean, dry, and free of oil, dust, or loose material before sealant is applied. Allow the sealant to reach full cure before exposing the joint to operating temperatures or fluid contact. Work in accordance with applicable mechanical and building codes for the specific trade and jurisdiction.