Dow Corning 99179322 Rtv Silicone Joint Sealant 10.1 Oz

Product Description

The DOW CORNING 99179322 is an RTV silicone joint sealant dispensed from a 10.1 oz cartridge, designed for sealing joints and gaps where flexibility, temperature resistance, and chemical durability are required. Part of the 733 Series, it cures to a clear finish and operates across a wide temperature range from -70 degrees F to 350 degrees F. With a tack-free dry time of just 15 minutes and a full cure in 24 hours, this sealant suits applications where quick turnaround matters. It carries food-safe certification under 21 CFR 177.2600 and meets UL 94 HB flammability standards. HVAC technicians, plumbers, and facilities maintenance professionals use this sealant for both new installations and service work.

This sealant is suited for residential and commercial applications wherever a flexible, clear, temperature-resistant seal is needed. It adheres to glass, metal, and plastic substrates, making it versatile across HVAC ductwork, plumbing penetrations, equipment housings, and food-processing environments where an FDA-compliant sealant is required. The 10.1 oz cartridge format is compatible with standard caulking guns for controlled, precise application in tight or overhead spaces.

Key Features

• RTV silicone formula with a 15-minute tack-free dry time and 24-hour full cure
• Wide service temperature range: -70 degrees F to 350 degrees F (-57 degrees C to 177 degrees C)
• Clear color for clean, low-visibility seals on glass, metal, and plastic
• Food-safe formulation compliant with 21 CFR 177.2600
• Meets UL 94 HB flammability standard
• Standard 10.1 oz cartridge fits most professional caulking guns

Compatibility

Adheres to glass, metal, and plastic substrates. Suitable for use in food-safe environments per 21 CFR 177.2600. Designed as an OEM-style replacement or serviceable sealant for joints, seams, and penetrations in HVAC, plumbing, and equipment-maintenance applications.

Installation Notes

Application should be performed by a qualified tradesperson following applicable codes including IFGC or IPC where penetration sealing is required. Clean and dry all surfaces before applying; contaminated substrates will reduce adhesion. Apply with a standard caulking gun at a consistent bead width and tool within the open working time. Allow the full 24-hour cure before exposing the joint to service temperatures or fluids.