IDEAL 5 lb Duct Seal Block

The IDEAL 5 lb duct seal block is a dark gray putty that provides an effective moisture and air barrier. It is ideal for sealing various surfaces including metal, masonry, wood, and plastic. The sealant offers a specific gravity of 1.65 and is non-toxic, making it safe for multiple applications.

Formulated with calcium carbonate, magnesium aluminum silicate, crystalline quartz silica, butane polymer, synthetic polymer, carbon black, antioxidant, cellulose fiber, aluminum silicate, tall oil rosin, and naphthenic wax, this duct seal is designed for durability and ease of use. It remains permanently soft and can be painted immediately after application. The product will not adversely affect other plastic materials or cause metal corrosion.

• Moisture and air barrier
• Seals around junction boxes, flashings, and service entrances
• Permanently soft, non-toxic compound suitable for painting
• Compatible with various plastic and metal surfaces

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