Dow Corning 1949101 Silicone Sealant 3 Oz White

Product Description

The DOW CORNING 1949101 is a white silicone sealant from the 738 Series, packaged in a 3 oz tube for targeted application. Silicone-based sealants in this class resist moisture, temperature cycling, and chemical exposure, making them a reliable choice for sealing joints, penetrations, and gaps in HVAC, plumbing, and general mechanical applications. The 3 oz tube size suits spot repairs and small-scale installs where a full cartridge would be wasteful. Licensed tradespeople and experienced DIYers both reach for silicone sealant when they need a flexible, durable seal that holds up over the long term.

The 738 Series silicone sealant is suited for multi-purpose use across residential and light commercial work. Common applications include sealing around pipe penetrations through walls and floors, closing gaps at HVAC duct connections, weathersealing around electrical and plumbing fixtures, and general joint sealing where silicone flexibility is required. The tube format gives the installer precise control over bead placement, particularly useful in tight spaces or when working around finished surfaces.

Key Features

• Silicone chemical type provides flexibility and long-term durability in sealed joints
• White color blends with common interior surfaces and fixtures
• 3 oz tube format allows precise, low-waste application in confined or detailed areas
• 738 Series multi-purpose designation covers a broad range of trade sealing tasks
• Smaller-than-16-oz container size is well suited for service calls and spot repairs

Compatibility

Designed as a multi-purpose silicone sealant suitable for general sealing tasks across HVAC, plumbing, and mechanical trade applications where a silicone-based product is specified.

Installation Notes

Apply only to clean, dry surfaces free of dust, oil, and old sealant residue. Shut off water supply or HVAC system airflow before sealing penetrations or duct joints, and allow full cure time before restoring service. Work in accordance with applicable mechanical and building codes, including IPC and IFGC requirements for firestopping and sealant use at penetrations. Avoid skin and eye contact during application and ensure adequate ventilation in enclosed spaces.